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

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

13.
The area under a force-displacement graph gives:
A.
Work done
B.
Power
C.
Energy
D.
Force
ANSWER :
A. Work done
14.
A force of 10 N displaces a body by 5 m in its direction. Work done is:
A.
2 J
B.
50 J
C.
5 J
D.
Zero
ANSWER :
B. 50 J
15.
Work done by a force field in a conservative system is:
A.
Path dependent
B.
Zero
C.
Path independent
D.
Maximum
ANSWER :
C. Path independent
16.
Work done by a force on an object depends on:
A.
Displacement only
B.
Force only
C.
Both force and displacement
D.
Neither force nor displacement
ANSWER :
C. Both force and displacement
17.
A force of 5 N acts on a 15 kg body initially at rest. The work done by the force during the first second of motion of the body is:

NEET - 2017

A.
5 J
B.
5/6 J
C.
6 J
D.
75 J
ANSWER :
B. 5/6 J
18.
Work done by a conservative force in a closed path is:
A.
Positive
B.
Zero
C.
Negative
D.
Infinite
ANSWER :
B. Zero