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MCQ's Test For ECAT Physics Chapter 4 Work and Energy
Try The MCQ's Test For ECAT Physics Chapter 4 Work and Energy
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Total Questions15
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Time Allowed20
ECAT Physics Chapter 4 Work and Energy
00:00
Question # 1
When force and displacement are perpendicular to each other than work is equal to
Question # 2
When a falling body hits ground, its KE changes to _____ energy.
Question # 3
The space around the earth in which its gravitational force acts on a body is called
Question # 4
Work done is maximum when angle between force and displacement is:
Question # 5
Work is always done on a body when:
Question # 6
The field in which work done in moving a body between two points depends upon the path followed is called:
Question # 7
The tidal energy is due to gravitational pull of :
Question # 8
If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
Question # 9
A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
Question # 10
Work done along a closed path in a gravitational field is:
Question # 11
Work is always done on a body when:
Question # 12
A solar cell is made from:
Question # 13
Escape velocity from surface of Moon as compared to that from Earth surface is:
Question # 14
The consumption of energy by a 60 W bulb in 2 minutes is:
Question # 15
A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be
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ECAT Physics Chapter 4 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | SI Unit of work is |
A. Nm-1
B. Joule
C. Nms
D. Both a and b
|
| 2 | Watt x second is unit of: |
A. Force
B. Work
C. Power
D. None of these
|
| 3 | A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is: |
A. 0°
B. 30°
C. 60°
D. 90°
|
| 4 | Which of the following types of force can do no work on the particle on which it acts |
A. Frictional force
B. Gravitational force
C. Electric force
D. Centripetal force
|
| 5 | Which one is conservative force |
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
|
| 6 | Work has the dimensions as that of |
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
|
| 7 | A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be |
A. 60°
B. 90°
C. 30°
D. 0°
|
| 8 | Energy stored in the spring of a watch is called |
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
|
| 9 | A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is: |
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
|
| 10 | If one newton force acts on a body and displaces the body through 1m work done on body is |
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
|
Test Questions