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AP EAMCET2009PhysicsThermal Properties of Matter

Three rods of same dimensional have thermal conductivity 3 K, 2 K and K . They are arranged as shown in the figure below Then, the temperature of the junction in steady state is

Options

  1. A200 3 ^ C
  2. B100 3 ^ C
  3. C75^ C
  4. D50 3 ^ C

Correct answer

B. 100 3 ^ C

Step-by-step solution

According to the figure array rlrl H & =H₁+H₂ & 3 K A(100-T) l & = 2 K A(T-50) l + K A(T-0) l 300-3 T =2 T-100+T 6 T =400 or T = 200 3 ^ C array

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