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 Form 1 Physics heat transfer topical questions and answers

Figure 12 shows two identical containers A and B into which a copper rod is fitted. The containers are well lagged.
The liquids in the containers were initially at the same temperature. If the heat is applied continuously at the position shown, state with a reason the container through which the loss of heat is likely to be higher.

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Answer Text:
-Heat loss in A is higher. Methylated spirit being more volatile evaporates
causing loss of heat of vaporization.