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 power of an electric generating station is expressed in:

Question # 2

Most of the geysers occur in:

Question # 3

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 # 4

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

Question # 5

Work is a:

Question # 6

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 7

The work done on the body will be zero if:

Question # 8

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

Question # 9

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

Question # 10

The value of escape velocity of Earth planet comes out to be:

Question # 11

Work is a Quantity

Question # 12

The commercial unit of electrical energy is :

Question # 13

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

Question # 14

When a falling body hits ground, its KE changes to _____ energy.

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
2 The work done moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body `
D. Power
3 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
4 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
5 The work performed on an object does not depend on
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
6 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
7 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°
8 Which one is conservative force
A. Electric force
B. Frictional force
C. Normal force
D. Air resistance
9 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
10 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these

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