ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 2

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 3

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 4

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:

Question # 5

Work done along a closed path in a gravitational field is:

Question # 6

Work is a always done on a body when

Question # 7

Which of the following types of force can do no work on the particle on which it acts

Question # 8

The field in which work done is moving body between two points depends upon the path followed is called:

Question # 9

Work is always done on a body when:

Question # 10

1 J = ________?

Question # 11

Which one is conservative force

Question # 12

Work has the dimensions as that of

Question # 13

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 14

Work is always done on a body when:

Question # 15

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
2 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
3 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
4 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
5 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
6 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
7 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
8 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
9 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
10 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these

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