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 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 with the direction of motion will be:

Question # 2

When two protons are brought are brought closer potential energy of both of them:

Question # 3

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:

Question # 4

Work done is independent of path followed in _______

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 9

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

Question # 10

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 11

Work is always done on a body when:

Question # 12

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

Question # 13

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

Question # 14

The work performed on an object does not depend on:

Question # 15

The work done 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 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
2 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
3 The work done in 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 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
5 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
6 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
7 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
8 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
9 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
10 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these

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