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

Work is always done on a body when:

Question # 2

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

Question # 3

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

Question # 4

The unit of work in CGS system is

Question # 5

Work done on a body by gravity in lifting it up to certain height is

Question # 6

Work is product of:

Question # 7

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

Question # 8

Which of the following type of force can do no work on the particle on which it acts:

Question # 9

The power of an electric generating station is expressed in:

Question # 10

The work performed on an object does not depend on

Question # 11

If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents:

Question # 12

The space around the earth within which it expects 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

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

Question # 15

Area under the force displacement graph gives

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
2 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
3 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
4 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
5 Which of the following is not a unit of power:
A. J-sec
B. Watt
C. N m/sec
D. Horsepower
6 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
7 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
8 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
9 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
10 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field

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