Force and Pressure UPSC Questions

Physics

Force and Pressure MCQ Questions


13.
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
14.
Consider the following statements: If there were no phenomenon of capillarity
1. it would be difficult to use a kerosene lamp?
2. One would not be able to use a straw to consume a soft drink
3. The blotting paper would fail to function
4. The big trees that we see around would not have grown on the Earth
Which of the statements given above are correct?
UPSC - 2012
A.
1, 2 and 3 only
B.
1, 3 and 4 only
C.
2 and 4 only
D.
1, 2, 3 and 4
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ANSWER :
B. 1, 3 and 4 only
15.
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)
16.
Friction acts in a opposite direction and it can affect an object to
A.
Slows down
B.
Stops
C.
Speed up
D.
Slows down and stops
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ANSWER :
D. Slows down and stops
17.
A force increases the speed of a 1.0kg object from 4m/s to 8m/s. The work done by the force will be
A.
8J
B.
16J
C.
24J
D.
32J
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ANSWER :
C. 24J
18.
Pressure =
A.
Area / force on which it acts
B.
force / area on which it acts
C.
Volume / force on which it acts
D.
Force / volume on which it acts
😑 View Answer Rough Work Error
ANSWER :
B. force / area on which it acts