In a good thermos flask; the main cause of heat loss is?

By: |Published on: Nov 10|Categories: Physics JAMB| 0 comments

A. conduction through the cork
B. the plastic base of the thermos flask
C. the silvered walls and shiny metals
D. the outer cover or jacket

Correct Answer:

Option A – conduction through the cork

Explanation

Since the cork is in contact with the walls of the flask, little conduction takes place

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