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

The work performed on an object does not depend on

Question # 2

Work has a dimension as that of:

Question # 3

Watt x second is unit of:

Question # 4

Work done in lower and bucket into the well is:

Question # 5

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

Question # 6

The types of mechanical energy is/are:

Question # 7

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

Question # 8

Work is a always done on a body when

Question # 9

The work performed on an object does not depend on:

Question # 10

Energy stored in the spring of a watch is called

Question # 11

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 # 12

Maximum work is done when force and displacement are

Question # 13

Work has the dimensions as that of

Question # 14

SI Unit of work is

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
2 When a body 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
3 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
4 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
5 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
6 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
7 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
8 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
9 If force and displacement are in opposite direction, the work done is taken as
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
10 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these

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