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question_answer1)
In the given diagrams, compasses are used to plot the magnetic field around a bar magnet with poles marked N (North) and S (South). Which of the following diagrams correctly shows the expected field pattern?
A)
B)
C)
D)
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question_answer2)
The figure shows a ring magnet, X, floating above another ring magnet, Y. This is because
A)
Magnet X is lighter than magnet Y done
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B)
Magnet Vis more powerful than magnet X done
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C)
The like poles of both magnets are facing each other and they repel each other done
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D)
The unlike poles of both magnets are facing each other and they attract each other. done
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question_answer3)
Reeta puts two different objects in each of the following containers.
Container (i): Copper coin and iron nail |
Container (ii): Steel nail and aluminium earring |
Container (iii): Marble and gold coin |
Container (iv): Nickel coin and steel nail |
She can use a magnet to separate the objects in containers
A)
(i) and (ii) done
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B)
(i), (ii) and (iii) done
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C)
(i), (ii) and (iv) done
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D)
(i), (ii), (iii) and (iv). done
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question_answer4)
Lisa did an experiment to find out which part of the magnet attracts the most pins. Which of the following readings is correct regarding the number of pins attracted by the different parts of the magnet?
A)
B)
C)
D)
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question_answer5)
Study the arrangement of three bar magnets as shown in figure. Which arrangement is possible?
A)
B)
C)
D)
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question_answer6)
Ashwini magnetized a piece of iron rod using the stroking method as shown in the diagram below.
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Which part of the iron rod becomes the North-seeking pole?
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A)
P done
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B)
Q done
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C)
R done
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D)
S done
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question_answer7)
What will happen when three bar magnets are hung in the manner as shown below?
A)
Nothing will happen. done
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B)
Magnet Y will turn round and round. done
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C)
Magnet Y will move towards magnet Z done
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D)
Magnet Y will move towards magnet X. done
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question_answer8)
Magnets lose their properties significantly if
A)
Left in the open done
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B)
Touched with iron done
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C)
Dropped from a height repeatedly done
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D)
None of these done
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question_answer9)
A matchbox containing an unknown object is placed on a thin sheet of glass in the experimental set-up shown in the figure.
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When the bar magnet moves, it is able to drag the match box along. What is most likely to be found in the matchbox?
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A)
Marble done
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B)
Toothpick done
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C)
Ten-cent coin done
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D)
Steel ball bearing done
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question_answer10)
In which of the following a permanent magnet is not used?
A)
In magnetic door catchers done
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B)
Loudspeakers done
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C)
In compasses done
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D)
None of these done
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question_answer11)
How many north and south poles are present in a magnet if it is broken into 6 pieces without loss of magnetism?
A)
Six done
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B)
Twelve done
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C)
Two done
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D)
Zero done
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question_answer12)
Two magnets are placed in a container as shown in the figure by some external force. What would happen if the force on magnet P is removed?
A)
Magnet P will attract magnet Q. done
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B)
Magnet P will repel magnet Q. done
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C)
Both magnets will demagnetize each other. done
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D)
Both magnets will produce electric current. done
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question_answer13)
Read the given statements and select the correct option.
Statement 1: When a horseshoe magnet is brought close to a pile of iron filings, more filings will be attracted to the U shaped part of the magnet. |
Statement 2: Horseshoe magnet has only one pole that is its U-shaped part. |
A)
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done
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B)
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. done
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C)
Statement 1 is true but statement 2 is false. done
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D)
Both statements 1 and 2 are false. done
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question_answer14)
Which of the following is incorrect?
A)
To increase the magnetic strength, increase the number of strokes while creating magnets. done
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B)
To increase the magnetic strength, increase the number of coils around the nail. done
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C)
Magnetic force is a pulling force only. done
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D)
Magnet may lose its magnetic property when heated to a very high temperature. done
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question_answer15)
Which of the following is the best way to keep magnets?
A)
B)
C)
D)
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question_answer16)
Arun suspended a bar magnet on a string as shown in the diagram below. He brought 3 bar-shaped objects P, Q and R towards the bar magnet. He placed the ends (X and Y) of each object, near the north pole of the bar magnet and recorded his observations in the table below.
Object | End X brought near to N pole | End Y brought near to N pole |
P | N pole repelled | N pole attracted |
Q | N pole attracted | N pole repelled |
R | N pole remains stationary | N pole remains stationary |
Which of the object(s) is/are the magnet?
A)
P only done
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B)
Q only done
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C)
P and Q only done
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D)
P and R only done
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question_answer17)
When Asha suspended four bars of different materials from a pole and brought the North pole of a bar magnet near part P and Q of each bar one by one as shown in figure, then observations she recorded are as follows:
Bar | Part P | Part Q |
I | Pushed | Pulled |
II | Nothing happened | Nothing happened |
III | Pulled | Pushed |
IV | Pulled | Pulled |
Which of the following sets correctly represents metal bars I, II, III and IV?
A)
B)
C)
D)
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question_answer18)
Arpita is standing in the middle of a cross road with a compass. The red portion of the compass needle is pointing towards her. She wants to go towards east then she should turn
A)
Right and then go straight done
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B)
Left and then go straight done
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C)
Right and then go left done
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D)
Left and then go right. done
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question_answer19)
Two bar magnets suspended by string, are separated by a piece of metal. Which of the following statements best explain the outcome shown in the diagram?
A)
Only like poles attract. done
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B)
The magnets have lost their magnetic forces. done
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C)
The metal exerts a magnetic field which attracts the magnets. done
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D)
The magnetic field of the magnets cannot pass through the metal. done
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question_answer20)
Observe the given figure and identify the correct statements.
(i) Poles 1, 3 and 5 are unlike poles. |
(ii) Poles 2, 4 and 6 are like poles. |
(iii) Pole 1 will attract pole 3 and 5. |
(iv) Pole 4 will be attracted by pole 1. |
A)
Only (i) and (iii) done
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B)
Only (ii) and (iv) done
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C)
Only (i) and (ii) done
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D)
Only (iii) and (iv) done
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