ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

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 # 2

The types of mechanical energy is/are:

Question # 3

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

Question # 4

1 J = ________?

Question # 5

Work is product of:

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

Watt x second is unit of:

Question # 10

The work performed on an object does not depend on:

Question # 11

Work done by the force of friction is always

Question # 12

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

Question # 13

Work done is maximum when angle between force and displacement is

Question # 14

SI Unit of work is

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
2 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
3 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
4 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
5 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
6 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
7 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
8 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
9 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
10 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these

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