Question

Pls tell the answer of these questions

Answer 1

Answer:

Ans 1 - The heater is placed near the floor because the air currents move upwards so the hot air fills up the whole room.

Ans 2 - Water kept in a black pot will cool faster because the black surface is a better radiator than a silvered surface.

Ans 3 - In places of hot climate it is advised that the outer walls of houses be painted white because white colour does not absorb any heat radiation from the Sun which keep inside cool even if there is hot climate outside the house.

Explanation:

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Chapter related to Heat and Temperature.

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