Question

Describe the construction and working of a thermos flask. would the thermos flask remain useful if you remove the silvering ? explain why?​

Answer 1

Answer:

This prevents heat transfer due to radiation. The space between the two walls is almost vacuum and the walls are sealed at the top. The double-walled glass vessel and vacuum prevents heat loss by conduction. The insulating stopper or cork at the top minimises heat loss by convection.