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

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

Question # 2

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

Question # 3

Which force is not a conservative force:

Question # 4

Watt x second is unit of:

Question # 5

Maximum work is done when force and displacement are

Question # 6

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 # 7

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

Question # 8

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 # 9

Tick the conservative force

Question # 10

Work has a dimension as that of:

Question # 11

The work performed on an object does not depend on:

Question # 12

Work is a:

Question # 13

Work is always done on a body when:

Question # 14

The work done by a force keeping an object in circular motion with constant speed is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
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 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
4 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
5 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
6 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power
7 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
8 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
9 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
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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