Question

Ventilators are provided in rooms just below the roof. Why?

Answer 1

because is there inside the room get hot , the hot air rises up and flow through these ventilators and thus cool air remains the bottom so that to relief in hot summers .

Answer 2

Hii dear,

◆ Ventilators are provided just under the roof because-
- When the temperature in the room it's up, density if air decreases.
- As hot air have lower density, it'll go to higher level and leave through ventilator at the top.
- In the process, cold air remains at the bottom of a room keeping the temperature cold.

Hope that was useful...