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The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is

The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is Correct Answer Equal to one

If the Prandtl number (Pr) is 1, the two boundary layers (hydrodynamic and thermal) are the same thickness.
If the Pr > 1, the thermal boundary layer is thinner than the velocity boundary layer.

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