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Q.

The flow speeds of air on the lower and upper surfaces of the wing of an aero plane are V and 2 V respectively. The density of air is ρ and surface area of wing is A. The dynamic lift on the wing is

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a

2ρV2A

b

2ρV2A

c

12ρV2A

d

ρV2A

answer is C.

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Detailed Solution

Dynamic lift = 12ρA2V2−V2=12ρV2A

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