Question # 1

Hot igneous rocks, usually in molten or partly molten state are found in the depth of

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5 km

10 km

15 km

20 km

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

Kilo watt hour is the unit of

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Power

Energy

Force

Torque

Which one is non renewable source of energy.

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Hydro electric

Bio mass

Tides

Oil

Which one is renewable source of energy.

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Coal

Uranium

Biomass

Natural gas

Identity the non conservative force among the following.

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Frictional force

Electrical force

Gravitational force

Elastic restoring force

The ability of a body to do work is called its

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Force

Power

Capacity

Energy

A layer of rock holding water that allows water to percolate through it with pressure is called.

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Geyeser

Aquifer

Stem vent

Hot spring

3 Joules of work id done is 3 seconds, then power

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6 Watt

1 Watt

3 Watt

2 Watt

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

The work done in gravitational field

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Depend upon the path

Does not depend upon the path

(+)ve

Zero

When distance is plotted against the force, it is taken along

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x-axis

y-axis

z-axis

None of these

Watt -m2 is the unit of

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Energy

Intensity

Power

Work

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

The dimension of power is

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MLT-1

ML2T-2

ML2T2

ML2T-3

The dimensions of work are

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MLT^-1

MLT^-2

ML²T^-2

ML^-1T^-1

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

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