Question # 1

The power of electric kettle is 500W and takes 2s to heat up, find heat generated?

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E = 250 w

E = 1000 w

E = 10000 J

1KJ

Hydro meter is used to measure:

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Pressure

Density

Area

Volume

When the cyclist stop pedalling, bicycle stops due to :

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Friction

Momentum

Weight

Mass

The unit of density is:

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kg^-1 m^-3

kg m^-1

kgm^-3

kgm^-2

Evaporation causes:

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Melting

Boiling

Freezing

Cooling

Crocus flower open when the temperature is:

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23 ^oC

26^oC

29^oC

32^oC

Birds are able to fly on ____________

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Radiations

Thermals

Air

Layers

Base / Hypotenuse is called:

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Sin𝜽

Cos 𝜽

Tan 𝜽

Cot 𝜽

SI unit of work is:

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Joule

Coulomb

Ampere

Kelvin

The energy stored in dam is:

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Potential energy

Kinetic energy

Chemical enegy

Nuclear energy

Weight is measured by:

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Spring balnce

Measuring cylinder

Physical balnce

None of these

Value of g increases with the

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Increases in mass of the body

Increase in altitude

Decreases in altitude

None of the above

Hydraulic press in works on:

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Pascal's law

Hook's law

Archimedes law

Principle of floatation

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