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

When two protons are brought are brought closer potential energy of both of them:

Question # 2

Work is a:

Question # 3

If force and displacement are in opposite direction, the work done is taken as

Question # 4

When force and displacement are perpendicular to each other than work is equal to

Question # 5

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:

Question # 6

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

Question # 7

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

Question # 8

The power of an electric generating station is expressed in:

Question # 9

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

Question # 10

Most of the geysers occur in:

Question # 11

The unit of work in CGS system is

Question # 12

Work done by the force of friction is always

Question # 13

Work is a:

Question # 14

A solar cell is made from:

Question # 15

Work has a dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
2 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
3 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
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 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
6 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power
7 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
8 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
9 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
10 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these

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