Question

it is advisable to place room heaters at the ground level of effective give reason

Answer 1

Answer:

HEATER is placed near the floor because hot air rises up and the room will be heatness will spread even. The density of air depends upon the temperature. ... So it is placed near the ceiling because the cool ( high density ) air tends to settle downwards

Answer 2

Answer:

Explanation:

Due to the physical property of the air. Hot air, being lighter than the cold air tends to rise up (This is the same principle on which hot air balloons function, heating the air inside, which makes it rise upwards in air).

So when hot air rises above inside the room, it pushes the cold air down and the cold air is then heated by the room heater, and rises.

So this completes the cycle using natural circulation of air and helps in better heating of air inside the room.