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

00:00
Question # 1

1 J = ________?

Question # 2

A solar cell is made from:

Question # 3

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 # 4

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

Question # 5

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 6

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

Question # 7

Which one is conservative force

Question # 8

Work done is lowering the bucket into the well is:

Question # 9

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

Question # 10

Which of the following types of force can do no work on the particle on which it acts

Question # 11

The commercial unit of electrical energy is :

Question # 12

Work is a Quantity

Question # 13

The work performed on an object does not depend on:

Question # 14

Work done is maximum when angle between force and displacement is

Question # 15

The dimensions of work

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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 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
3 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
4 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
5 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
6 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
7 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
8 The work done in 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
9 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
10 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these

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