Tardigrade
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Physics
Air is a bad conductor of heat or partly conducts heat, still, the vacuum is to be placed between the walls of the thermos flask because
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Q. Air is a bad conductor of heat or partly conducts heat, still, the vacuum is to be placed between the walls of the thermos flask because
NTA Abhyas
NTA Abhyas 2022
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
Solution:
No flow of heat by convection in vacuum. As convection requires medium particle to propogate.