A) \[\delta \]
B) \[\delta /2\]
C) \[\delta /3\]
D) \[\delta /4\]
Correct Answer: C
Solution :
\[\delta *=\int\limits_{0}^{\delta }{\left( 1-\frac{u}{{{U}_{\infty }}} \right)}\,\,dy\] \[=\int\limits_{0}^{\delta }{\left( 1-\frac{y}{{{2}'}} \right)}\,\,dy=\left| y-\frac{{{y}^{2}}}{{{2}'}} \right|=\delta -\frac{\delta }{2}=\frac{\delta }{2}\]
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