# Work And Energy Mcqs

Our collections of Multiple choice questions and answers focuses on study of Work And Energy in Physics. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Work And Energy in Physics comprehensively.

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

Electric field

Conservative field

Electromagnetic field

Gravitational field

## 2. A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference?

Man does more work than child

Child does more work than man

Both do the same amount of work

It is a foolish question

3.5 x 103 J

3.5 x 104 J

3.5 x 106 J

3.5 x 109 J

## 4. Biomass can be converted into fuels by

Direct combustion

Fermentation

Both (a) and (b)

None of these

## 5. Geothermal energy is a ____________________ source of energy.

Non-renewable

Stable

Renewable

None of the above

## 6. Gravitational P.E of a body has

No formula

A formula mgh only

A formula

No general formula

38.2 J

392.1 J

39.2 J

3.92 J

1600 ms-1

50.6 ms-1

71.6 ms-1

2263ms-1

## 9. If velocity is doubled then

Momentum increases 4 times and K.E increases 2 times

Momentum and K.E. remain same

Momentum increases 2 times and K.E increases constant

Momentum increases 2 times and K.E increases 4 time

1.44kw/m2

1.4kw/m2

1 kw/m2

None

36 x 106 J

36 x 1012 J

36 x 109 J

36 x 108 J

## 12. Propulsion force of a rocket is

Non-conservative force

Conservative force

Both (a) and (b)

Non of these

Proton

Electron

Neutron

A-particle

Displacement

Acceleration

Power

Energy

Area

Work done

Power

None of these

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