Question

How do the following serve in a Vacuum flask?

i. Vacuum between the walls of the glass.

ii. Silvering of the outer surface of inner wall.

iii. Silvering of inner surface of outer wall.​

Answer 1

Answer:

iii. Silvering og inner surface of outer wall.

Explanation:

The silver coating on the inner bottle prevents heat transfer by radiation, and the vacuum between its double wall prevents heat moving by convection. The thinness of the glass walls stops heat entering or leaving the flask by conduction. The case surrounding the flask provides additional insulation.

Answer 2

Answer:

Vacuum between the walls of the glass.

Explanation:

I think this is the correct answer