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QAIPM-2001-Ph-2943: NEET 2001 Physics - Class 11 AIPM-2001-Ph-2943 Solution: A cylindrical rod having temperature \(T_1\) and \(T_2\) at its …
A cylindrical rod having temperature and at its end. The rate of flow of heat cal/sec. If all the linear dimensions are doubled keeping temperature constant, then rate of flow of heat will be
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Step-by-Step Verified Solution
Heat flow rate d Q d t = K A ( T 1 _ T 2 ) L = Q
When linear dimensions are double.
A 1 _ r 1 2 , L 1 = L
A 2 _ 4 r 1 2 , L 2 = 2 L _ Q 2 = 2 Q 1