Temperature difference of 120°C is maintained between two ends of a uniform rod AB of length 2L. Another bent rod PQ, of same cross-section as AB and length 
, is connected across AB (see figure). In steady state, temperature difference between P and Q will be close to:
Text Solution
Verified by ExpertsThe correct answer is:
B
We define thermal resistance
Given circuit can be reduced to
Equivalent resistance 
Thermal current 
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