Consider the following statements pertaining to boundary layer on solid surfaces:1) The boundary layer separation takes place if the pressure gradient is zero.2) The condition of boundary layer separation is \({\left( {\frac{{\delta u}}{{\delta y}}} \right)_{y = 0}} = 0\)3) Boundary layer on a flat plate is laminar if the Reynolds number is less than 5 × 105Which of the above statements is/are correct?

Consider the following statements pertaining to boundary layer on soli

1.	Consider the following statements pertaining to boundary layer on solid surfaces:1) The boundary layer separation takes place if the pressure gradient is zero.2) The condition of boundary layer separation is \({\left( {\frac{{\delta u}}{{\delta y}}} \right)_{y = 0}} = 0\)3) Boundary layer on a flat plate is laminar if the Reynolds number is less than 5 × 105Which of the above statements is/are correct?
A.	1, 2 and 3
B.	1 and 2 only
C.	2 and 3 only
D.	1 and 3 only
Answer» D. 1 and 3 only

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