ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

Try The 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 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:

Question # 3

Work done is independent of path followed in _______

Question # 4

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

Question # 5

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 # 6

The work performed on an object does not depend on

Question # 7

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 8

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

Question # 9

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 10

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 11

Energy stored in the spring of a watch is called

Question # 12

A solar cell is made from:

Question # 13

Work has the dimensions as that of

Question # 14

The work done in moving a body between two points in a conservation field is independent of the:

Question # 15

Work done is lowering the bucket into the well is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
2 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes
3 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
D. None of these
4 Which force is not a conservative force:
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
5 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
6 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
7 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
8 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°
9 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:
A. +5 x 101J
B. +5 x 102J
C. +5 x 103J
D. +5 x 104J
10 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these

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