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Question
An incompressible fluid flows over a flat plate with zero pressure gradient. The boundary layer
thickness is 1 mm at a location where the Reynolds number is 1000. If the velocity of the fluid
alone is increased by a factor of 4, then the boundary layer thickness at the same location, in mm
will be
Options:
A .  4
B .  2
C .  0.5
D .  0.25
Answer: Option C


-NA-



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