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

Watt x second is unit of:

Question # 2

The work done moving a body between two points in a conservation field is independent of the:

Question # 3

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

Question # 4

A solar cell converts energy of the Sun into:

Question # 5

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 6

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

Question # 7

1 J = ________?

Question # 8

The work performed on an object does not depend on

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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 # 13

Work is a scalar product of

Question # 14

The types of mechanical energy is/are:

Question # 15

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

Question # 16

Which one is conservative force

Question # 17

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 18

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

Question # 19

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

Question # 20

Work is a always done on a body when

Question # 21

The power of an electric generating station is expressed in:

Question # 22

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

Question # 23

The unit of work in CGS system is

Question # 24

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

Question # 25

Work is always done on a body when:

Question # 26

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

Question # 27

Work done is maximum when angle between force and displacement is

Question # 28

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

Question # 29

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 # 30

Work done by the force of friction is always

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