Home Physics Transmission of Heat Convection Air is bad conductor of heat or partly condu…
Physics Transmission of Heat Convection MCQ (Single Correct)

Air is bad conductor of heat or partly conducts heat, still vacuum is to be placed between the walls of the thermos flask because

A
It is difficult to fill the air between the walls of thermos flask
B
Due to more pressure of air, the thermos can get crack
C
By convection, heat can flow through air
D
On filling the air, there is no advantage

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Verified by Experts
The correct answer is:
C

No flow of heat by convection in vacuum.

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