JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Among the following rods made of same material, the one that can conduct more heat in a given time when their ends are maintained at the same temperature differences

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Correct option: D

l = 100\,\,\mathrm{cm},\,r = 2\,\,\mathrm{cm}

Option D (

l = 100\,\,\mathrm{cm},\,r = 2\,\,\mathrm{cm}

) is correct because heat conduction is proportional to the area and inversely proportional to the length, making this option the most efficient.

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