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KVPY2013PhysicsThermal Properties of Matter

A metallic prong consists of 4 rods made of the same material, cross-section and same lengths as shown. The three forked ends are kept at 100^ C and the handle end is at 0^ C . The temperature of the junction is

Options

  1. A25^ C
  2. B50^ C
  3. C60^
  4. D75^ C

Correct answer

D. 75^ C

Step-by-step solution

3 kA [100- T ]= kA [ T -0]3 ~W -3 ~T = T T =75^ C

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