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

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

Maximum work is done when force and displacement are

Question # 2

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

Question # 3

Work is always done on a body when:

Question # 4

Power is a :

Question # 5

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

Question # 6

Work is always done on a body when:

Question # 7

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 # 8

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

Question # 9

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

Question # 10

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 11

The types of mechanical energy is/are:

Question # 12

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 # 13

Work is a

Question # 14

Which force is not a conservative force:

Question # 15

Work is a Quantity

Question # 16

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

Question # 17

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

Question # 18

A field in which the work done is moving a body along closed path is zero is called:

Question # 19

Work is a always done on a body when

Question # 20

The value of escape velocity of Earth planet comes out to be:

Question # 21

The commercial unit of electrical energy is :

Question # 22

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

Question # 23

Work is a scalar product of

Question # 24

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 25

A solar cell converts energy of the Sun into:

Question # 26

The unit of work in CGS system is

Question # 27

Work has a dimension as that of:

Question # 28

Which force is not a conservative force?

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

Which one is conservative force

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
2 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
3 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
4 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinte work
6 The work performed on an object does not depend on
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
7 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
8 A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
9 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
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 and B is correct
D. Both A and B is correct

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