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

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

Question # 2

Which of the following is not a unit of power:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

The work done on the body will be zero if:

Question # 7

The types of mechanical energy is/are:

Question # 8

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

Question # 9

A solar cell converts energy of the Sun into:

Question # 10

The power of an electric generating station is expressed in:

Question # 11

The dimensions of work

Question # 12

When a wall is pushed by a person very strongly, he has done:

Question # 13

Work is a always done on a body when

Question # 14

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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°
3 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
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:
A. Minimum Work
B. Maximum Work
C. Zero Work
D. Negative Work
5 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:
A. 2 J
B. 0.25 J
C. 1 J
D. 0.5 J
6 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
7 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
8 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
9 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
10 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force

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