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If an electric fan be switched on in a c...

If an electric fan be switched on in a closed room, will the air of the room be cooled? If not, why do we feel cold?

A

increases

B

decreases

C

remains unchanged

D

may increase or decrease depending on the speed of rotation of the fan.

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The correct Answer is:
A
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Assertion : If an electric fan be switched on in a closed room, the air of the room will be cooled. Reason : Fan air decrease the temperature of the room.

Statement- 1 : When an electric fan is switched on in a closed room, the air of the room is cooled. Statement- 2 : When fan is switched on, the speed of the air molecules will increase.

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NARAYNA-KINETIC THEORY OF GASES-C.U.Q
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  5. The internal energy of a perfect monoatomic gas is

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  6. The internal energy of a perfect monoatomic gas is

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  7. Which of the following is constant in an isochoric process?

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  9. In the free expansion of a gas, its internal energy

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  10. The internal energy of an ideal gas depends upon

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  13. The first law of thermodynamics is based on the law of conservation of

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