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Physics

Physics
Which of the following device is used to measure humidity?

Hydrometer
Hygrometer
Anemometer
Psycho Meter

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Physics
A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will

Increase
Have its shape changed
Remain unaffected
Decrease

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Physics
Speed of sound in air is unaffected by change in

Volume
Humidity
Pressure
Temperature

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Physics
The cover of a solar cooker is made of glass because

It absorbs sun's rays
It rediates heat better than metals
It reflects sun's rays
It retains the heat inside by the green house effect

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Physics
In a Carnot engine when heat is taken from the source, its temperature

Decreases
Decreases and then remains constant
Increases
Remains constant

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Physics
The boiling point of water depends upon the

Density
Volume
Atmospheric pressure
Mass

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MORE MCQ ON Physics

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