Work Done by a Constant Force and a Variable Force NEET Questions

Physics - Work, Energy, and Power

Work Done by a Constant Force and a Variable Force MCQ Questions


1.
The work done by a force when displacement is perpendicular to force is:
A.
Maximum
B.
Minimum
C.
Zero
D.
Negative
😑 View Answer Rough Work Error
ANSWER :
C. Zero
2.
Work done by a force is negative when:
A.
Displacement is in the direction of force
B.
Displacement is opposite to the force
C.
Force is perpendicular to displacement
D.
Force is zero
😑 View Answer Rough Work Error
ANSWER :
B. Displacement is opposite to the force
3.
Work done is positive when:
A.
The force opposes displacement
B.
Displacement and force are perpendicular
C.
The force is in the direction of displacement
D.
The object moves in a circular path
😑 View Answer Rough Work Error
ANSWER :
C. The force is in the direction of displacement
4.
Work done by gravity when an object falls freely is:
A.
Positive
B.
Negative
C.
Zero
D.
Infinite
😑 View Answer Rough Work Error
ANSWER :
A. Positive
5.
Work done by friction is usually:
A.
Positive
B.
Negative
C.
Zero
D.
Unpredictable
😑 View Answer Rough Work Error
ANSWER :
B. Negative
6.
A force F on a particle moving in a straight line varies with distance d. The work done by the force in displacing the particle from d=0 to d=12 m is:

NEET - 2015

A.
21 J
B.
26 J
C.
13 J
D.
18 J
😑 View Answer Rough Work Error
ANSWER :
B. 26 J