Question

In which of the following processes, convection does not take place primarily?

(a) Sea and land breeze

(b) Boiling of water

(c) Warming of glass of bulb due to filament

(d) Heating air around a furnace

Answer 1

(c) Warming of glass of bulb due to filament

In convection process, the heat is transferred by the bodily motion of the heated particles. It is not so in case of warming of glass bulb due to filament heating. In fact, warming of glass bulb is due to radiation.