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question_answer1)
Force X and Y are applied on an object in opposite directions. If the magnitude of force Y is more than the X, then the net force acting on the object .
A)
X - Y is in the direction of Y. done
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B)
Y - X is in the direction of Y. done
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C)
X - Y is in the direction of X. done
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D)
Y - X is in the direction of X. done
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E)
None of these done
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question_answer2)
We can conclude that force can change the shape of an object by which of the following examples?
A)
Breaking of glass on hammering. done
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B)
Squeezing of a toothpaste tube. done
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C)
Stretching of a spring on applying force. done
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D)
All the above done
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E)
None of these done
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question_answer3)
Which one of the following forces can be applied only when the body is in contact with the object?
A)
Frictional force done
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B)
Muscular force done
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C)
Gravitational force done
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D)
Both [a] and [b] done
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E)
None of these done
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question_answer4)
S.I. unit of pressure is?
A)
Newton done
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B)
Pascal done
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C)
Metre done
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D)
Newton done
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E)
None of these done
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question_answer5)
When would depression in the ground be the most:
A)
When a man stands on the ground done
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B)
When a lies upside down on the ground. done
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C)
When a tree falls on the ground. done
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D)
All the above done
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E)
None of these done
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question_answer6)
_____ is involved in filling up the liquid into the syringe.
A)
Atmospheric pressure done
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B)
Magnetic pressure done
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C)
Frictional force done
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D)
Electrostatic force done
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E)
None of these done
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question_answer7)
The force which always opposes the motion of an object is:
A)
Gravitational force done
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B)
Frictional force done
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C)
Magnetic force done
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D)
Muscular force done
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E)
None of these done
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question_answer8)
Friction arises due to _______ in the surfaces of objects.
A)
Softness done
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B)
Irregularities done
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C)
Atmospheric pressure done
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D)
Magnetism done
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E)
None of these done
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question_answer9)
The net force is zero when the two forces applied on an object are in:
A)
The same directions done
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B)
The opposite directions and are of different in magnitude. done
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C)
The same directions and are same in magnitude. done
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D)
The opposite directions and are of equal in magnitude. done
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E)
None of these done
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question_answer10)
Atmospheric pressure _______ with increasing height.
A)
Increases done
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B)
Decreases done
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C)
Remains same done
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D)
Expands done
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E)
None of these done
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question_answer11)
In which of the following more frictional force will be observed?
A)
A man walking on a glass. done
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B)
A man walking on ice. done
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C)
A man walking on a concrete road. done
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D)
All the above done
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E)
None of these done
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question_answer12)
When the force applied in the directions of motion of the object, its spa
A)
Decreases done
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B)
Increases done
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C)
Either increases or decreases done
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D)
All the above done
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E)
None of these done
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question_answer13)
School bags have wide straps so as to:
(i) Increase the pressure on the shoulder. |
(ii) Decrease the pressure on the shoulder. |
(iii) Make the bag's weight fall over a small area of the shoulder. |
(iv) Make the bag's weight fall over a large area of the shoulder. |
A)
(ii) and (iii) done
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B)
(i) and (iii) done
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C)
(i) and (ii) done
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D)
(ii) and (iv) done
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E)
None of these done
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question_answer14)
Friction depends on the:
A)
Nature of two surfaces. done
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B)
Forces with which two surfaces are pressed together. done
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C)
Both [a] and [b] done
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D)
Either [a] or [b] done
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E)
None of these done
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question_answer15)
Usually length of vocal cords of men is ____ women.
A)
Less than done
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B)
Greater than done
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C)
Same as done
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D)
Slightly less than done
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E)
None of these done
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question_answer16)
Pressure at the surface of the pond is _____ the pressure at the bottom of the pond.
A)
Same as done
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B)
Less than done
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C)
Greater than done
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D)
Slightly greater than done
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E)
None of these done
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question_answer17)
A force is applied on an object which is in rest. If frictional force is equal to applied force then the body:
A)
Will move in forward direction. done
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B)
Will move in backward direction. done
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C)
Will remain in rest. done
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D)
Will move in upward direction. done
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E)
None of these done
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question_answer18)
___ shaped objects will face minimum resistance while moving in under:
A)
Rectangular done
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B)
Square done
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C)
Oblongata done
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D)
Streamlined done
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E)
None of these done
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question_answer19)
Which of the following produces sound in Dholak?
A)
Stretched strings done
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B)
Air column done
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C)
Stretched membrane done
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D)
Keys done
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E)
None of these done
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question_answer20)
A boy is pushing a table from left to right. The force of friction will act on the table:
A)
From left to right done
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B)
Vertically downwards done
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C)
Vertically upwards done
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D)
From right to left done
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E)
None of these done
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question_answer21)
If the same force is applied on a toy car, on which of the following. It will move with maximum speed?
A)
Wooden surface done
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B)
Uneven surface done
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C)
Polished marble surface done
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D)
Brick wall done
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E)
None of these done
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question_answer22)
Two boxes filled with books, one is of 2kg and other is of 4kg are kept on a cemented floor. Which one of them would require a larger force to move it from the rest position?
A)
Box with heavier weight requires more force. done
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B)
Box with lighter weight requires more force. done
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C)
Both the boxes require same force. done
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D)
Either [a] or [b] done
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E)
None of these done
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question_answer23)
The maximum friction will be observed between two objects when:
A)
One object which just tends to move over the surface of the other object. done
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B)
One object moves slowly over the surface of another object. done
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C)
One object rolls over the surface of another object. done
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D)
All the above done
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E)
None of these done
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question_answer24)
P and Q are two forces applied on object 0 in the same direction, then the resultant force acting on the object is equal to:
A)
\[P-Q\] done
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B)
Zero done
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C)
\[P+Q\] done
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D)
\[P\times Q\] done
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E)
None of these done
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question_answer25)
A list of mediums is given below:
(i) Wood |
(ii) Water |
(iii) Air |
(iv) Vacuum |
In which of these mediums can sound travel?
A)
(i) and (ii) only done
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B)
(i), (ii) and (iii) only done
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C)
(iii) and (iv) only done
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D)
(ii), (iii) and (iv) only done
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E)
None of these done
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question_answer26)
100 Pascal is equal to:
A)
\[100\text{ }Newton\] done
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B)
\[1000\,N/{{m}^{2}}\] done
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C)
\[100\,\,N/{{m}^{2}}\] done
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D)
\[10,000\,\,N/{{m}^{2}}\] done
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E)
None of these done
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question_answer27)
As we go up in the atmosphere from the surface of earth, the atmosphere pressure decreases due to decrease in ______ of air above us.
A)
Length done
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B)
Weight done
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C)
Colour done
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D)
Mixture done
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E)
None of these done
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question_answer28)
While playing tugs of war we often feel that the rope is slipping through our hands. We rub soil on our hands to:
A)
Decrease friction done
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B)
Increase friction done
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C)
Increase pressure done
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D)
To increase area of contact done
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E)
None of these done
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question_answer29)
Friction can be reduced by:
A)
Polishing the surface. done
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B)
Greasing the surfaces. done
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C)
Using wheels. done
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D)
All the above done
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E)
None of these done
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question_answer30)
Ball bearing is used between the hub of wheel and axle to ___ the friction.
A)
Increase done
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B)
f Reduce done
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C)
Rub done
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D)
Maximize done
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E)
None of these done
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question_answer31)
When a pencil is thrown upwards, then its speed goes on decreasing, because of:
A)
Electrostatic force done
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B)
Frictional force done
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C)
Muscular force done
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D)
Gravitational force done
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E)
None of these done
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question_answer32)
Drag force is applied by which of the following and in which direction?
A)
Solids, in the direction or opposite to the direction of motion. done
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B)
Liquids, in the direction of motion of the object only. done
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C)
Gases, in the direction of motion of the object only. done
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D)
Fluids, in the direction opposite to the direction of motion of the object. done
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E)
None of these done
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question_answer33)
If the amplitude of a vibration is doubled then the loudness of the sounds will become:
A)
Half done
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B)
One-fourth done
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C)
Doubled done
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D)
Four times done
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E)
None of these done
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question_answer34)
Frequency of vibration is directly proportional to___ of sound.
A)
Amplitude done
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B)
Loudness done
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C)
Pitch done
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D)
Time period done
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E)
None of these done
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question_answer35)
Which one of the following is a high frequency wave?
A)
B)
C)
D)
E)
None of these done
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question_answer36)
If we strike a wooden table with a steel spoon lightly we hear a feeble sound but if we hit the wooden table hard with steel spoon, a loud sound is heard because:
A)
Amplitude of vibration is high in case of loud sound. done
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B)
Amplitude of vibration is low in case of feeble sound. done
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C)
Both [a] and [b] done
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D)
Either [a] or [b] done
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E)
None of these done
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question_answer37)
Which one of the following statements is correct?
(i) Loudness of sound is directly proportional to the square of amplitude vibrations. |
(ii) Sound can travel through vacuum. |
(iii) Speed of sound is maximum in solids. |
(iv) The outer part of ear is called ear canal. |
A)
(i) and (ii) done
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B)
(ii) and (iii) done
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C)
(i) and (iii) done
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D)
(i) and (iv) done
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E)
None of these done
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question_answer38)
Which one of the following is not a bone of ear?
A)
Anvil done
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B)
Hammer done
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C)
Humerus done
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D)
Stirrup done
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E)
None of these done
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question_answer39)
Unit of measuring loudness is:
A)
Hertz done
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B)
Metre/Second done
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C)
Metre done
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D)
Decibel done
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E)
None of these done
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question_answer40)
In order to increase the loudness of a sound we have to:
A)
Decrease its frequency of vibration. done
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B)
Increase its frequency of vibration. done
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C)
Increase its amplitude of vibration. done
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D)
Decrease its amplitude of vibration. done
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E)
None of these done
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