The rate of heat transfer from a vertical plate by natural...

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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

A. $${\left( {\Delta {\text{T}}} \right)^{\frac{1}{4}}}$$

B. $${\left( {\Delta {\text{T}}} \right)^{\frac{1}{2}}}$$

C. $${\left( {\Delta {\text{T}}} \right)^{\frac{5}{4}}}$$

D. $${\left( {\Delta {\text{T}}} \right)^{\frac{3}{4}}}$$

Answer: Option D

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