16: Two plastic cups are placed one inside the other. Hot water is poured into the inner
cup and a lid is put on top as shown.
small spacer
small air gap
hot water
bench
Which statement is correct?
A) heat loss by radiation is prevented by the small air gap.
B) No heat passes through the sides of either cup
C) The bench is heated by convection from the bottom of the outer cup
D) The lid is used to reduce heat loss by convection
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Answer:
A) heat loss by radiation............. air gap.
Explain-:
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