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in Physics by (89.6k points)
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 thermo flask
B. due to more pressure of air, the flask can crack
C. by convection,heat can flow through air
D. None of the above

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1 Answer

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by (90.6k points)
Correct Answer - C
No flow of heat by convection in vaccum.

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