A uniform slab of dimension 10cm × 10cm × 1cm is kept between two heat reservoirs at temperatures 10ºC and 90ºC. The larger surface areas touch the reservoirs. The thermal conductivity of the material is 0.80 W/m–ºC. Find the amount of heat flowing through the slab per second.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(64 J)
A = 100 cm 2
i H = 
×(0.8) (100 × 10 –4 )
λ = 1 cm
= i H = 80 × 0.8 = 64 J/s
Q = 64 × 1 = 64 J
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