Work, Energy and Power UPSC Questions

Physics

Work, Energy and Power MCQ Questions


7.
The SI unit of spring constant is
A.
Nm
B.
Nm-1
C.
N
D.
W
😑 View Answer Rough Work Error
ANSWER :
B. Nm-1
8.
Which is the type of collision in which both the linear momentum and the kinetic energy of the system remain conserved?
A.
Destructive collision
B.
Inelastic collision
C.
Elastic collision
D.
None of the above
😑 View Answer Rough Work Error
ANSWER :
C. Elastic collision
9.
 The energy possessed by the body by virtue of its motion is known as?
A.
Chemical energy
B.
Kinetic energy
C.
Thermal energy
D.
Potential energy
😑 View Answer Rough Work Error
ANSWER :
B. Kinetic energy
10.
Which of the physical quantity is/are a vector ?
A.
Displacement
B.
Velocity
C.
Acceleration
D.
All the above
😑 View Answer Rough Work Error
ANSWER :
D. All the above
11.
A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is
A.
Positive
B.
Negative
C.
Zero
D.
Infinity
😑 View Answer Rough Work Error
ANSWER :
C. Zero
12.
When can one say that work is done on the body
A.
When the body is stationary
B.
When there is an increase in energy because of mechanical influence
C.
When the body moves a certain distance
D.
When the body experiences force
😑 View Answer Rough Work Error
ANSWER :
B. When there is an increase in energy because of mechanical influence