Conservative and Non Conservative Forces NEET Questions

Physics - Work, Energy, and Power

Conservative and Non Conservative Forces MCQ Questions


1.
In physics, work done by a force F on a body undergoing displacement d is defined as:
A.
W = F × d (always)
B.
W = F·d = Fd cosθ (where θ is angle between F and d)
C.
W = F + d
D.
W = Fd sinθ
😑 View Answer Rough Work Error
ANSWER :
B. W = F·d = Fd cosθ (where θ is angle between F and d)
2.
The work done by a force on a body is said to be the product of:
A.
Magnitude of force and speed
B.
Magnitude of displacement and the component of force along displacement
C.
Force and time
D.
Force and acceleration
😑 View Answer Rough Work Error
ANSWER :
B. Magnitude of displacement and the component of force along displacement
3.
Which of the following is an example of a non-conservative force?

NEET - 2017

A.
Gravitational force
B.
Electrostatic force
C.
Frictional force
D.
Spring force
😑 View Answer Rough Work Error
ANSWER :
C. Frictional force
4.
The SI unit of work is:
A.
Newton (N)
B.
Watt (W)
C.
Joule (J)
D.
Pascal (Pa)
😑 View Answer Rough Work Error
ANSWER :
C. Joule (J)
5.
The dimensional formula of work is:
A.
[MLT⁻¹]
B.
[ML²T⁻²]
C.
[ML²T⁻³]
D.
[MLT⁻²]
😑 View Answer Rough Work Error
ANSWER :
B. [ML²T⁻²]
6.
The work done by a conservative force in moving a particle around a closed path is:

NEET - 2016

A.
Always positive
B.
Always negative
C.
Zero
D.
Depends on the path
😑 View Answer Rough Work Error
ANSWER :
C. Zero