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

Watt x second is unit of:

Question # 2

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

Question # 3

Which one is conservative force

Question # 4

Which force is not a conservative force?

Question # 5

Work has a dimension as that of:

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The work done on the body will be zero if:

Question # 10

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 11

The power of an electric generating station is expressed in:

Question # 12

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 13

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 14

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 15

Work done is independent of path followed in _______

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 The work performed on an object does not depend on
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
4 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
7 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
8 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
9 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
10 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.

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