Question

a thermos flask containing a liquid is shaken vigorously . What happens to its temp. ?

Answer 1

Thermos flask consists of a double walled glass bottle encased in a protective plastic or metal outer case. The glass inner bottle is also mirror finished. Between the double walls of the glass bottle is a partial vacuum. It is designed to keep anything put into it, whether hot or cold, at the same temperature for a long period by restricting the amount of heat that can enter or leave the flask. Heat passes through things in three ways, conduction, convection and radiation. By having a vacuum between the bottle walls, it prevents conduction and convection taking place. The mirror finish limits radiation as silvered surfaces reflect heat as well as light.


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Answer 2

Answer:

The Temperature of the liquid increases!

Explanation:

As you shake the flask vigorously

the molecules of the liquid starts moving they acquire greater K.E

Ad K.E increases,Temperature also increases!

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