Question

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IN a vaccum flask which methods of heat transfer are prevented by the vaccum flask..
see the options in the picture above​

Answer 1

Answer:

the correct ans is opt d bcoz:

i.the vacuum between the glass walls prevent heat moving by convection.

ii. The thinness of walls prevent heat entering or leaving by conduction.

iii. The silver coating on the bottle prevents heat transfer by radiation..

Explanation:

hope It Helps mark as brainliest if ans is correct..