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

The tidal energy is produced due to rotation of Earth relative to:

Question # 2

A solar cell is made from:

Question # 3

Work is always done on a body when:

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

When two protons are brought are brought closer potential energy of both of them:

Question # 8

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:

Question # 9

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 10

Work is a

Question # 11

Work done on a body by gravity in lifting it up to certain height is

Question # 12

Work is always done on a body when:

Question # 13

Work done in lower and bucket into the well is:

Question # 14

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

Question # 16

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:

Question # 17

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 # 18

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

Question # 19

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

Question # 20

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 21

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

Question # 22

Watt x second is unit of:

Question # 23

When a wall is pushed by a person very strongly, he has done:

Question # 24

Area under the force displacement graph gives

Question # 25

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

Question # 26

The energy stored int he water of the dam is:

Question # 27

Energy stored in the spring of a watch is called

Question # 28

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

Question # 29

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

Question # 30

The dimensions of work

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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 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
3 Teh consumption of energy by a 1000 watt heater in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
4 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
5 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
6 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
7 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
8 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
9 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
10 When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these

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