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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Two cylindrical conductors A  and  BA\;\mathrm{and}\;B of same metallic material have their diameters in the ratio 1  :21\;:2 and lengths in the ratio 2  :12\;:1. If the temperature difference between their ends is same, the ratio of heat conducted respectively by A  and  BA\;\mathrm{and}\;B per second is
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Correct option: D
1:81\mathrm{ }:\mathrm{ }8
Option D (1:81\mathrm{ }:\mathrm{ }8) is correct because it calculates the ratio of heat conducted by two cylindrical conductors based on their dimensions and the thermal conductivity formula.

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