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

Work done by the force of friction is always

Question # 2

Work done in lower and bucket into the well is:

Question # 3

Work is always done on a body when:

Question # 4

When a falling body hits ground, its KE changes to _____ energy.

Question # 5

The commercial unit of electrical energy is :

Question # 6

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

Question # 7

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 # 8

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 # 9

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

Question # 10

The work performed on an object does not depend on:

Question # 11

Tick the conservation force:

Question # 12

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

Question # 13

In the force applied is parallel to the direction of motion, then work done is:

Question # 14

In the force applied to parallel to the direction of motion, then the work done is:

Question # 15

The dimensions of work

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
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 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
4 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
5 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
6 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
7 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
8 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
9 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
10 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement

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