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Question
The rate of heat transfer from a vertical plate by natural convection depends upon the temperature differences (ΔT) between wall and outside bulk. The proportionality is given as
Options:
A .  (ΔT)1/4
B .  (ΔT)1/2
C .  (ΔT)5/4
D .  (ΔT)3/4
Answer: Option D
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