In a good thermos flask the main cause of heat ... - JAMB Physics 2008 Question
In a good thermos flask, the main cause of heat loss is?
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 jacker
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Correct Option: A
Since the cork is in contact with the walls of the flask, little conduction takes place
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