Three identical rods have been joined at a junction to make it a $Y$ shape structure. If two free ends are maintained at $90\,^oC$ and the third end is at $30\,^oC$ , then what is the junction temperature $\theta $ ?......... $^oC$

818-656

  • A

    $40$

  • B

    $50$

  • C

    $60$

  • D

    $70$

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