cholakantaaryal6 cholakantaaryal6

25-03-2021
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A thermos flask has a vacuum between the double walls why?

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shreyas2167 shreyas2167

29-03-2021

Explanation:

A thermos flask has double walls, which are evacuated and the vacuum bottle is silvered on the inside. The vacuum between the two walls prevents heat being transferred from the inside to the outside by conduction and convection.

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