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NEST2017PhysicsThermal Properties of Matter

A cubical box of side 0.20 m is constructed from 0.012 m thick concrete panels of thermal conductivity K=0.8 ~W ~m ⁻¹ ~K ⁻¹ . A 100 W heater is sealed inside the box and switched on. The temperature of air outside the box is 20^ C . After a long period of time, the air temperature inside the box will be close to

Options

  1. A20^ C
  2. B22^ C
  3. C24^ C
  4. D26^ C

Correct answer

D. 26^ C

Step-by-step solution

No solution available.

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