ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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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ECAT Physics Chapter 4 Work and Energy

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Question # 1

The work performed on an object does not depend on

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

Power is a :

Question # 4

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 5

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

Question # 6

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

Question # 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 is 25J. The angle which the force makes the direction of motion will be:

Question # 8

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 9

Work done is lowering the bucket into the well is:

Question # 10

Work done is independent of path followed in _______

Question # 11

The power of an electric generating station is expressed in:

Question # 12

Area under the force displacement graph gives

Question # 13

The space around the earth in which its gravitational force acts on a body is called

Question # 14

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 15

In the force applied is parallel to the direction of motion, then work done is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is 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 is correct
2 Energy stored in the spring of a watch is called
A. Potential energy
B. Kinetic energy
C. Nuclear energy
D. Elastic potential
3 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
4 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
5 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
6 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
7 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
8 The field in which work done is moving body between two points depends upon the path followed is called:
A. Conservative filed
B. Non-conservative field
C. Electric field
D. None of these
9 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
10 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these

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