Draw a labelled diagram of a thermos flask.
Explain how the transfer of heat by conduction
convection and radiation is reduced to a minimum
in it.
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4
Answer:
minimum bhosri
reduction bhosri
increment bhosri
marr kha jaayega
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7
Answer:
The vacuum between the two glass walls of the thermos flask considerably reduces the flow of heat by conduction and convection. This is because both conduction and convection need molecules of a medium for transfer of heat. The silvered surfaces reflect the heat back, thus reducing radiation.
Explanation:
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