Class/Course - Class XI

Subject - Physics

Chapter - Mechanical Properties of Fluids

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Q.1 A slab of stone of area 0.36 m2 and thickness θ 1 m is exposed on the lower surface to steam at 1000 C. A block of ice at 00 C rests on the upper surface of the slab. In one hour, 4.8 kg of ice is melted. The thermal conductivity of slab is:
(Given latent heat of fusion of ice = 3.36 x 105 J kg-1):
  1.24 J/m/s/0C
  1.29 / J/m/s/0C
  2.05 J/m/s/0C
  1.02 J/m/s/0C