Question

In order to heat air it is important to increase the area of contact between the air and the surface gathering the heat.true or false

Answer 1

False, the area of contact need not be increased or the surface gathering the heat.

Answer 2

According to the question,

In order to heat air it is important to increase the area of contact between the air and the surface gathering the heat.

Because,air is generally heated by the radiation and convection procedures.

And in this two procedures,the area of the heat contact is not necessary at all.

That's why the statement mentioned in the question is completely false.