Question

B. What is the way to reduce conduction In thermos flask?​

Answer 1

Answer:

If heat can't escape from a vacuum flask, it follows that heat can't penetrate into a flask from outside either. The sealed stopper stops heat getting in by convection; the vacuum stops conduction, and the metal lining between the outer case and the inner chamber stops heat radiating in either.

Answer 2

Explanation:

The vacuum prevents conduction. The tight stopper prevents air from entering or leaving the flask, so convection isn't possible either. ... The sealed stopper stops heat getting in by convection; the vacuum stops conduction, and the metal lining between the outer case and the inner chamber stops heat radiating in either.

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