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

Question # 2

Power is a :

Question # 3

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

Question # 4

Work is a Quantity

Question # 5

The dimensions of work

Question # 6

SI Unit of work is

Question # 7

Most of the geysers occur in:

Question # 8

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

Question # 9

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

Question # 10

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 # 11

Work is always done on a body when:

Question # 12

Maximum work is done when force and displacement are

Question # 13

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 14

When force and displacement are perpendicular to each other than work is equal to

Question # 15

The work performed on an object does not depend on

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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 In the force applied is parallel to the direction of motion, then work done is:
A. Maximum
B. Minimum
C. Zero
D. None of these
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:
A. Power
B. Work
C. Pressure
D. None of these
4 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
5 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
6 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
7 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
8 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
9 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be
A. 60°
B. 90°
C. 30°
D. 0°
10 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:
A. 60°
B. 90°
C. 30°
D. 0°

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