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

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

Question # 2

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

Question # 3

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 # 4

Which force is not a conservative force?

Question # 5

Work is a always done on a body when

Question # 6

Work is a

Question # 7

Power is a :

Question # 8

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

Question # 9

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

Question # 10

Which of the following type of force can do no work on the particle on which it acts:

Question # 11

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

Question # 12

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:

Question # 13

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

Question # 14

The energy stored int he water of the dam is:

Question # 15

Work is always done on a body when:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
2 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
3 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
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 Which of the following type 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
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 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
8 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
9 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
10 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these

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