ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

Try The 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

Work is a scalar product of

Question # 2

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

Question # 3

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 4

Power is a :

Question # 5

The power of an electric generating station is expressed in:

Question # 6

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 7

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

Question # 8

The commercial unit of electrical energy is :

Question # 9

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

Question # 10

Area under the force displacement graph gives

Question # 11

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

Question # 12

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

Question # 13

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 # 14

Work is product of:

Question # 15

Work has a dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
2 Work-energy principle states that work done on the body by applied force is equal to change in:
A. Potential energy
B. Kinetic nergy
C. Linear momentum
D. None of these
3 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
4 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:
A. 2 J
B. 0.25 J
C. 1 J
D. 0.5 J
5 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
6 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
7 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
8 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is
A. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
9 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
10 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct

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