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

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

Question # 2

The power of an electric generating station is expressed in:

Question # 3

Area under the force displacement graph gives

Question # 4

When a wall is pushed by a person very strongly, he has done:

Question # 5

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:

Question # 6

Work is always done on a body when:

Question # 7

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 # 8

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

Question # 9

Work done is maximum when angle between force and displacement is:

Question # 10

A solar cell is made from:

Question # 11

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

Question # 12

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

Question # 13

Work is a:

Question # 14

The energy stored int he water of the dam is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
3 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
4 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
5 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
6 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:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
7 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
8 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
9 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
10 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd

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