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 unit of work in CGS system is

Question # 2

Work is a:

Question # 3

Work is a scalar product of

Question # 4

SI Unit of work is

Question # 5

A solar cell is made from:

Question # 6

The tidal energy is due to gravitational pull of :

Question # 7

The work done on the body will be zero if:

Question # 8

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 9

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 10

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

Question # 11

Energy stored in the spring of a watch is called

Question # 12

The ultimate source of money sources of energy is:

Question # 13

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

Question # 14

The tidal energy is produced due to rotation of Earth relative to:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
2 Which of the following type 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
3 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
4 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
5 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
6 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
7 A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
8 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
9 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
10 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these

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