Question # 1

The dimensions of work are

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MLT^-1

MLT^-2

ML²T^-2

ML^-1T^-1

Work is a

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Scalar quantity

Vector quantity

Basic quantity

None of these

The unit of energy is same as that of

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Power

Work

Torque

Density

The unit of solar light inversely is

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Watt

kW m-2

Watt m-2

1 m2

1 KWh =

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3.6 x 10³K

3.6 x 10⁶K

3.6 x 10⁹J

3.6 x 10¹²J

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

The formula for the power is

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P= W/d

P=W/v

P=W/t

P=Wt

The dimension of power is

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MLT-1

ML2T-2

ML2T2

ML2T-3

Bio mass is converted into fuel by

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Evaporation

Fermentation

Reflection

Scattering

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

Kilo watt hour is the unit of

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Power

Energy

Force

Torque

Biomas is a potential source of

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Renewable energy

Non renewable energy

Botha a and b

Tidal energy

If a body of mass 5 kg is raised vertically through a distance of 1 m, then work done is.

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49 J

4.9 J

490 J

0.49 J

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 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

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

Which one is non renewable source of energy.

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Hydro electric

Bio mass

Tides

Oil

_______ is bio fuel

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Water

Petrol

Ethanol

Oil

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