The laminar boundary layer thickness in zero pressure gradient flow over a flat

Question

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

Options:

A . X1.5

B . X0.8

C . X-1.5

D . X-0.8

Answer: Option B

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