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Question
Which part of a thermos flask prevents the loss of heat by radiation?
Which part of a thermos flask prevents the loss of heat by radiation?
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Solution
The correct option is D Shiny silver wall
The figure given below shows the parts of a thermos flask:
Though there is vacuum in the thermos flask, radiation can take place as it does not require a medium. The shiny and silvery inner wall reflects the radiated heat and thus keeps the contents of the flask hot or cold. (maintains the temperature)
The figure given below shows the parts of a thermos flask:
Though there is vacuum in the thermos flask, radiation can take place as it does not require a medium. The shiny and silvery inner wall reflects the radiated heat and thus keeps the contents of the flask hot or cold. (maintains the temperature)
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