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 field in which work done is moving body between two points depends upon the path followed is called:

Question # 2

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

Question # 3

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

Question # 4

Which one is conservative force

Question # 5

Area under the force displacement graph gives

Question # 6

Tick the conservative force

Question # 7

Work has the dimensions as that of

Question # 8

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

Question # 9

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 10

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

Question # 11

The commercial unit of electrical energy is :

Question # 12

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 # 13

A solar cell is made from:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
3 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
4 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
5 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
6 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
7 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°
8 When a body moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
9 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
10 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule

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