Four rods of identical cross-sectional area and made from the same metal form the sides of square. The temperature of two diagonally opposite points and $T$ and $\sqrt 2 $ $T$ respective in the steady state. Assuming that only heat conduction takes place, what will be the temperature difference between other two points
  • A$\frac{{\sqrt 2 + 1}}{2}T$
  • B$\frac{2}{{\sqrt 2 + 1}}T$
  • C$0$
  • D
    None of these
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