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

00:00
Question # 1

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

Question # 2

Most of the geysers occur in:

Question # 3

Work done is lowering the bucket into the well is:

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Watt x second is unit of:

Question # 9

Work is a

Question # 10

Work done by the force of friction is always

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Tick the conservative force

Question # 15

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 16

Energy stored in the spring of a watch is called

Question # 17

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

Question # 18

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

Question # 19

Work is a:

Question # 20

Which force is not a conservative force:

Question # 21

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 # 22

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

Question # 23

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

Question # 24

The work performed on an object does not depend on:

Question # 25

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 # 26

When force and displacement are perpendicular to each other than work is equal to

Question # 27

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 # 28

Work done is maximum when angle between force and displacement is:

Question # 29

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 # 30

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
2 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
3 The work done moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body `
D. Power
4 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°
5 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
6 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
7 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
8 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
9 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
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:
A. 0°
B. 30°
C. 60°
D. 90°

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