A) on top side is more than on lower side
B) on lop side is less than on lower side
C) is same on both sides
D) is turbulent
Correct Answer: A
Solution :
The aerofils are so designed that\[{{P}_{upper\,side}}<{{P}_{lower\,side}}\] so that the aerofils get a lifting force in upward direction. According to Bernoulli's theorem, where the pressure is large, the velocity will be minimum or vice-versa. Thus, \[{{v}_{upper\,side}}>{{v}_{lower\,side}}\]
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