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AP EAMCET201724 Apr 2017Evening ShiftPhysicsThermal Properties of MatterActual

Three metal rods made of copper, brass and steel each of area of cross-section 4 ~cm ^2 are joined as shown in the figure. Their lengths are respectively 46 ~cm , 13 ~cm and 12 ~cm . Their coefficients of thermal conductivity are respectively 0.92,0.26 and 0.12 , all in CGS units. The rods are thermally insulated from the surroundings except at the ends. Rate of flow of heat through the copper rod, in cal s ⁻¹ is

Options

  1. A2.4
  2. B6.0
  3. C4.8
  4. D8.2

Correct answer

C. 4.8

Step-by-step solution

No solution. Refer to answer key.

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