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question_answer1)
Directions : (1-61) for assertion and Reason Type Questions |
In this type of question, a statement of assertion [A] is followed by a statement of reason [R]. Mark the correct choice as : |
|
ASSERTION: In magnet, the molecular magnets are aligned in same direction. |
REASON: Iron behaves as magnet. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer2)
ASSERTION: For making permanent magnets, steel is preferred over soft iron. |
REASON: As retentivity of steel is smaller. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer3)
ASSERTION: Basic difference between an electric line and magnetic line of force is that former is discontinuous and the latter is continuous or endless. |
REASON: No electric lines of forces exist inside a charged body but magnetic lines do exist inside a magnet. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer4)
ASSERTION: Magnetic moment of helium atom zero. |
REASON: All the electron is paired in helium atom orbitals. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer5)
ASSERTION: Magnetic moment of an atom is due to both, the orbital motion and spin motion of every electron. |
REASON: A charged particle produces a magnetic field. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer6)
ASSERTION: Gauss theorem is not applicable in magnetism. |
REASON: A mono magnetic pole does not exist. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer7)
ASSERTION: Torque experience by the bar magnet is maximum when field is applied perpendicular to magnetic moment. |
REASON: Torque on a bar magnet depends on the angle between applied magnetic field and magnetic dipole moment. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer8)
ASSERTION: The poles of magnet cannot be separated by breaking into two pieces. |
REASON: The magnetic moment will be reduced to half when a magnet is broken into two equal pieces. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer9)
ASSERTION: An un magnetized piece of iron is attracted to a bar magnet. |
REASON: An atom is equivalent to a current loop. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer10)
ASSERTION: Aclinic lines on the magnetic map represent lines of equal dip. |
REASON: When the Horizontal and vertical Components of the earth's magnetic field are equal, the angle of dip is \[60{}^\circ \]. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer11)
ASSERTION: The earth's magnetic field is due to iron present in its core. |
REASON: At a low temperature magnet loses its magnetic property or magnetism. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer12)
ASSERTION: If an electron while coming vertically from outer space enters the earth's magnetic field, it is deflected towards west. |
REASON: Electron has negative charge |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer13)
ASSERTION: The ends of magnet suspended freely point out always along north south: |
REASON: Earth behaves as a huge magnet. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer14)
ASSERTION: Soft iron core is used in a moving coil galvanometer. |
REASON: Soft iron is Ferro magnetic in nature. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer15)
ASSERTION: A compass needle when placed on the magnetic north pole of the earth rotates in vertical direction. |
REASON: The earth has only horizontal component of its magnetic field at the north poles. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer16)
ASSERTION: Earth's magnetic field does not affect the working of a moving coil galvanometer. |
REASON: The earth's magnetic field is quite weak as compared to magnetic field produced in the moving coil galvanometer. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer17)
ASSERTION: Vibration magnetometer can be used to compare the magnetic moment of two bar magnets. |
REASON: By using vibration magnetometer we can find the time period of vibration of the magnet. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer18)
ASSERTION: A linear solenoid carrying current is equivalent to a bar magnet. |
REASON: The magnetic field lines of both are same. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer19)
ASSERTION: The tangent galvanometer can be made more sensitive by increasing the number of turns of its coil. |
REASON: Current through galvanometer is inversely proportional to the number of turns of coil. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer20)
ASSERTION: If a bar magnet made of iron is melted it loses its magnetism. |
REASON: Liquid and gases cannot be Ferro-magnetic. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer21)
ASSERTION: At neutral point, a compass needle point out in any arbitrary direction. |
REASON: Magnetic field of earth is balanced by field due to magnets at the neutral points. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer22)
ASSERTION: The product of magnetic susceptibility and absolute temperature for a paramagnetic substance is a constant. |
REASON: The magnetic susceptibility of a paramagnetic material does not depend on temperature. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer23)
ASSERTION: Copper is paramagnetic substance. |
REASON: Paramagnetic substance when placed in a magnetic field is freely magnetized in a direction opposite to that of the magnetizing field. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer24)
ASSERTION: For a perfectly diamagnetic" substance permeability is zero. |
REASON: The ability of material to permit the passage of magnetic lines of force through it is called magnetic permeability. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer25)
ASSERTION: The ferromagnetic substances do not obey curie's law. |
REASON: At Curie point a ferromagnetic substance starts behaving as a paramagnetic substance. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer26)
ASSERTION: The permeability of a ferromagnetic material is independent of the magnetic field. |
REASON: Permeability of a material is a constant quantity. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer27)
ASSERTION: The properties of paramagnetic and ferromagnetic substances are not effected by heating. |
REASON: As temperature rises, the alignment of molecular magnets gradually increases. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer28)
ASSERTION: The susceptibility of diamagnetic materials does not depend upon temperature. |
REASON: Every atom of a diamagnetic material is not a complete magnet in itself. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer29)
ASSERTION: Soft iron is used as transformer core. |
REASON: Soft iron has narrow hysteresis loop. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer30)
ASSERTION: Reduction factor (K) of a tangent galvanometer helps in reducing deflection to current. |
REASON: Reduction factor increases with increase of current. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer31)
ASSERTION: Iron is not a magnet. |
REASON: Iron is diamagnetic substance. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer32)
ASSERTION: A device for storing memory displays a hysteresis loop such as a ferromagnetic substance. |
REASON: Ferromagnetic substances are those in which each individual atom has a non-zero magnetic moment. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer33)
ASSERTION: Cobalt steel cannot be used as permanent magnets. |
REASON: Permanent magnet should possess a low retentivity and high Coercivity. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer34)
ASSERTION: A current carrying coil is equivalent to a magnetic dipole having dipole moment NiA. |
REASON: A current Carrying loop is equivalent to a bar magnet. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer35)
ASSERTION: Magnetism is relativistic. |
REASON: When we move along with charge so that there is no motion relative to us, we find no magnetic field associated with the charge. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer36)
ASSERTION: A tangent galvanometer is used for measuring current. |
REASON: Tangent galvanometer reads current directly. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer37)
ASSERTION: A soft iron core is used in a moving coil galvanometer to increase the strength of magnetic field. |
REASON: From soft core number of the magnetic lines of force passes. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer38)
ASSERTION: Time period of vibration of two magnets when like poles are in same direction (in a vibration magnetometer) is larger than the period of vibration when like poles are in different direction. |
REASON: Moment of inertia increases in the same position. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer39)
ASSERTION: Earth's magnetic field inside a closed iron box is less as compared to the Outside |
REASON: The magnetic permeability of iron is low. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer40)
ASSERTION: When a magnetic dipole is placed in a non-uniform magnetic field, only a torque acts on the dipole. |
REASON: Force would also acts on dipole if magnetic field is uniform. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer41)
ASSERTION: A paramagnetic sample display greater magnetism (for the same magnetizing field) when cooled. |
REASON: The magnetization does not depend on temperature. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer42)
ASSERTION: When a magnet is brought near from nails, only translator force act on it. |
REASON: The field due to a magnet is generally uniform. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer43)
ASSERTION: There is only one neutral point on a horizontal board when a magnet is held vertically on the board. |
REASON: At the neutral point the net magnetic field due to the magnet and magnetic field of the earth is zero. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer44)
ASSERTION: To protect any instrument from external magnetic field, it is put inside an iron body. |
REASON: Iron is a magnetic if brought near iron nails, only translatory force act on it. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer45)
ASSERTION: Poles of a magnet can never be separated. |
REASON: Since each atom of a magnetic material is a magnet in itself. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer46)
ASSERTION: Magnetic moment is measured in Joule/tesla or amp \[{{m}^{2}}\]. |
REASON: Joule/tesla is equivalent to amp\[{{m}^{2}}\]. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer47)
ASSERTION: To measure the magnetic moment of a bar magnet, we may use a tangent galvanometer. |
REASON: We must know the horizontal component of earth's field to measure the magnetic moment of a bar magnet. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer48)
ASSERTION: The net magnetic flux coming out of a closed surface is always zero. |
REASON: Unlike poles of equal strength exist together. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
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question_answer49)
ASSERTION: Electromagnets are made of soft iron. |
REASON: Coercivity of soft iron is small. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer50)
Expected Questions
ASSERTION: The true geographic north direction is found by using a compass needle. |
REASON: The magnetic meridian of the earth is along the axis of rotation of the earth. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer51)
ASSERTION: A disc shaped magnet is levitated above a superconducting material that has been cooled by liquid nitrogen. |
REASON: Super conductors repel a magnet. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer52)
ASSERTION: Diamagnetic materials can exhibit magnetism. |
REASON: Diamagnetic materials have permanent magnetic dipole moment. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer53)
ASSERTION: Ferromagnetic substances become paramagnetic above curie temp. |
REASON: Domains are destroyed at high temperature. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer54)
ASSERTION: We cannot think of magnetic field configuration with three poles. |
REASON: A bar magnet does exert a torque on itself due to its own field. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer55)
ASSERTION: Magnetic susceptibility is a pure number. |
REASON: The value of magnetic susceptibility for vacuum is one. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer56)
ASSERTION: The magnetic poles of earth do not coincide with the geographic poles. |
REASON: The discrepancy between the orientation of a compass and true north south direction is known as magnetic declination. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer57)
ASSERTION: Magnetic force between two short magnets, when they are co-axial follows inverse square law of distance. |
REASON: The magnetic forces between two poles do not follow inverse square law of distance. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer58)
ASSERTION: A super conductor is a perfect diamagnetic substance. |
REASON: A superconductor is a perfect conductor. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer59)
ASSERTION: Magnetic field lines are continuous and closed. |
REASON: Magnetic monopole does not exist. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer60)
ASSERTION: In water, value of magnetic field decreases. |
REASON: Water is a diamagnetic substance. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow
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question_answer61)
ASSERTION: Paramagnetic substances get poorly attracted in magnetic field |
REASON: Because magnetic dipoles are aligned along external magnetic field weakly. |
A)
If both assertion and reason are true and reason is the correct explanation of assertion. done
clear
B)
If both assertion and reason are true and reason is not the correct explanation of assertion. done
clear
C)
If assertion is true but reason is false. done
clear
D)
If both assertion and reason are false. done
clear
E)
If assertion is false but reason is true. done
clear
View Solution play_arrow