Temperature difference of $120\,^oC$ 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 $\frac{{3L}}{2}$,  is connected across $AB$ (See figure). In steady state, temperature difference between $P$ and $Q$ will be close to .......... $^oC$

820-552

  • [JEE MAIN 2019]
  • A

    $45$

  • B

    $75$

  • C

    $60$

  • D

    $35$

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