In the laminar flow of air (Pr = 0.7) over a heated plate if δ and δ – McqOptions

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1.	In the laminar flow of air (Pr = 0.7) over a heated plate if δ and δT denote, respectively, the hydrodynamic and thermal boundary layer thicknesses, then
A.	δ = δT
B.	δ > δT
C.	δ < δT
D.	δ = 0 but δT ≠ 0
Answer» D. δ = 0 but δT ≠ 0

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