Question

in the mos flask, the silvering of the walls prevents loss of heat by​

Answer 1

Answer:

heat radiated is reflected by the silver walls to the inside of the vacuum bottle. The outer and inner walls have vacuum in between them which prevents heat transfer to outside either through conduction or convection. The shiny silvery surface prevents any gain or loss of heat through radiation.

Answer 2

Yes, thermoflask is designed to prevent the contents of the flask from losing heat.

The stopper, i.e. vacuum between double walls of thermoflask prevents heat transfer through convection.

The glass walls are silver coated because it reduces emitted radiation when they are silver coated i.e. made shiny. And we know that shiny surfaces reflects all the heat so all the heat is being reflected inside the walls and heat remains unaffected. And the thinesss of glass walls will stop heat entering or leaving the flask by conduction.

So, the flask is designed to prevent heat loss by conduction, convection and radiation.

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