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

Question # 2

Work is a Quantity

Question # 3

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 4

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:

Question # 5

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 6

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

Question # 7

Most of the geysers occur in:

Question # 8

Work is product of:

Question # 9

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 10

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

Question # 11

Work done along a closed path in a gravitational field is:

Question # 12

Which force is not a conservative force:

Question # 13

Maximum work is done when force and displacement are

Question # 14

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

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 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
2 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
3 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
4 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°
5 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
6 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
7 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
8 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.
9 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
10 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinte work

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