Question # 1

When the rocket moves away from the earth, the work against gravity

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Remains constant

Varies directly with distance

Varies inversely with distance

Varies inversely with square of distance

Bio mass is converted into fuel by

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Evaporation

Fermentation

Reflection

Scattering

The space within which gravitational force acts on a body is called

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Electric field

Gravitational field

Magnetic field

Force field

The K.E. of bullet of mass 500 gm moving at a speed of 200 ms-1

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250 J

125 J

2500 J

10,000 J

A body has P.E. = mgh, when it is at height 'h' from the ground. At the point at the distance 'x' below from the top its P.E. with

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mgh

mgx

mg(x-h)

None of these

Salter's duck was invented by

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Newton

Einstein

Prof Salter

Maxwell

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

Original source of energy for biomass is

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Earth

Star

Moon

Sun

1 KWh =

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3.6 x 10³K

3.6 x 10⁶K

3.6 x 10⁹J

3.6 x 10¹²J

A body of mass 1.0 Kg dropped from the top of a tower of highest 50 m, what will be its K.E. 10 m below the top

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400 J

490 J

49 J

98 J

Work has dimension lime

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Torque

Momentum

Velocity

Power

The dimension of power is

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MLT-1

ML2T-2

ML2T2

ML2T-3

_______ is bio fuel

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Water

Petrol

Ethanol

Oil

The tides raise in the sea roughly

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Once a day

Twice a day

Three a day

Four time a day

Identity the non conservative force among the following.

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Frictional force

Electrical force

Gravitational force

Elastic restoring force

If velocity 'v' of an object is double, then K.E. because.

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Remain same

Sixteen times

Double

Four times

The unit of energy is same as that of

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Power

Work

Torque

Density

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11th Class Part 1 Physics Chapter 4 Test Online MCQs With Answers

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