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Question

In which of the following process convection does not take place primarily?
  1. Sea and land breeze
  2. Trade wind
  3. Boiling of water
  4. Warming of glass of bulb due to filament

A
Sea and land breeze
B
Warming of glass of bulb due to filament
C
Trade wind
D
Boiling of water
Solution
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In convection process 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. Infact,warming of glass bulb is due to radiation.

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