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

Question # 2

Which one is conservative force

Question # 3

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

Question # 4

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 5

Which force is not a conservative force?

Question # 6

Work has a dimension as that of:

Question # 7

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 # 8

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

Question # 9

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

Question # 10

Work is product of:

Question # 11

Work done is independent of path followed in _______

Question # 12

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 # 13

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

Question # 14

Work done is maximum when angle between force and displacement is

Question # 15

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
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 two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
4 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
5 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
6 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
7 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
8 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°
9 A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`
A. Minimum work
B.
Maximum work
C. Zero work
D. Negative work
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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