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

Work has the dimensions as that of

Question # 2

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 3

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

Question # 4

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

Question # 5

When two protons are brought are brought closer potential energy of both of them:

Question # 6

The work done on the body will be zero if:

Question # 7

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

Question # 8

The commercial unit of electrical energy is :

Question # 9

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

Question # 10

Work is product of:

Question # 11

The space around the earth in which its gravitational force acts on a body is called

Question # 12

Power is a :

Question # 13

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 # 14

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

Question # 15

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:`

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
2 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
3 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
4 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
5 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
6 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
7 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
8 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
9 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
10 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges

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