ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

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

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

Work done by the force of friction is always

Question # 2

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 3

The power of an electric generating station is expressed in:

Question # 4

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

Question # 5

The work performed on an object does not depend on

Question # 6

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 7

Work done is independent of path followed in _______

Question # 8

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 9

The dimensions of work

Question # 10

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

Question # 11

Energy stored in the spring of a watch is called

Question # 12

Work has the dimension as that of:

Question # 13

Work is always done on a body when:

Question # 14

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:

Question # 15

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

Question # 16

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

Question # 17

The types of mechanical energy is/are:

Question # 18

A solar cell is made from:

Question # 19

If force and displacement are in opposite direction, the work done is taken as

Question # 20

The commercial unit of electrical energy is :

Question # 21

Work is a:

Question # 22

The work performed on an object does not depend on:

Question # 23

Work done is lowering the bucket into the well is:

Question # 24

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 # 25

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 26

A solar cell converts energy of the Sun into:

Question # 27

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

Question # 28

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

Question # 29

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 30

Work is a always done on a body when

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
A. Power
B. Work
C. Pressure
D. None of these
2 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:
A. 60°
B. 90°
C. 30°
D. 0°
3 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
5 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
6 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
7 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°
8 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
9 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
10 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

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