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

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

Question # 2

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

Question # 3

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

Question # 4

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 5

Work is a:

Question # 6

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

Question # 7

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

Question # 8

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 # 9

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

Question # 10

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

Question # 11

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

Question # 12

Energy stored in the spring of a watch is called

Question # 13

Work done in lower and bucket into the well is:

Question # 14

The work performed on an object does not depend on:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
2 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
3 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
4 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
5 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
6 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
7 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°
8 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
9 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
10 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

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