Question

Which option is correct?

Convection of heat is the process of heat transfer due to the:
(a) random motion of molecules
(b) downward movement molecules
(c) upward movement of molecules
(d) free movement of molecules​

Answer 1

Answer:

HERE IS UR ANSWER

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Convection (or convective heat transfer) is the transfer of heat from one place to another due to the movement of fluid.

Convection above a hot surface occurs because hot air expands, becomes less dense, and rises

option c) is correct.

Answer 2

Convection of heat is the process of heat transfer due to the random motion of molecules (option a).

When a fluid travels over or near a solid surface, there is a temperature difference between the fluid and the solid surface, which causes convection heat transfer.