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AP EAMCET201824 Apr 2018Evening ShiftPhysicsThermal Properties of MatterActual

In the figure shown, AB is a rod of length 30 ~cm , area of cross-section 1 ~cm ^2 and thermal conductivity 336 SI units. The ends A and B are at constant temperatures 20^ C and 40^ C respectively. A point C of the rod is connected to ice at 0^ C in a thermally insulated box D through a highly conducting wire of negligible heat capacity. The rate at which ice melts in the box is ( L _ ice =80 cal g ⁻¹ )

Options

  1. A84 mgs ⁻¹
  2. B84 gs ⁻¹
  3. C20 mgs ⁻¹
  4. D40 mgs ⁻¹

Correct answer

D. 40 mgs ⁻¹

Step-by-step solution

No solution. Refer to answer key.

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