Force and Pressure UPSC Questions

Physics

Force and Pressure MCQ Questions


7.
The force exerted by the earth to pull the object towards itself is called
A.
Contact force
B.
Electrostatic force
C.
Gravitational force
D.
Muscular force
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ANSWER :
C. Gravitational force
8.
The SI unit of force is
A.
Ampere
B.
Newton
C.
Diopter
D.
Candela
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ANSWER :
B. Newton
9.
Force changes the
A.
Motion of body
B.
Speed of body
C.
Shape of body
D.
All the above
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ANSWER :
D. All the above
10.
Which of the following forces is a contact force?
A.
Gravitational force
B.
Magnetic force
C.
Electrostatic force
D.
Friction
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ANSWER :
D. Friction
11.

Force of friction always acts on moving objects and its direction shall be

A.

Opposite to the direction of motion

B.

Perpendicular to the direction of motion

C.

Along the direction of motion

D.

On any direction

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ANSWER :

A. Opposite to the direction of motion

12.

Which of the following is correct about the state of motion
(i) The state of motion of an object is described by its speed and the direction of motion
(ii) The state of rest is considered to be the state of zero speed
(iii) An object may be at rest or in motion; both are its states of motion

A.

(i) only

B.

(ii) only

C.

(i) and (ii)

D.

(i), (ii) and (iii)

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ANSWER :

D. (i), (ii) and (iii)