Which of the following is incorrect for a finite wing?(a) Streamlines on the top surface bend towards the root(b) Span-wise flow at the bottom surface is towards the tip(c) Higher pressure region exists at the top surface(d) Streamlines on the bottom surface bend towards the tipI got this question by my college professor while I was bunking the class.This key question is from Downwash and Induced Drag topic in portion Flow over Airfoils over Finite Wing of Aerodynamics

Which of the following is incorrect for a finite wing?(a) Streamlines

1.	Which of the following is incorrect for a finite wing?(a) Streamlines on the top surface bend towards the root(b) Span-wise flow at the bottom surface is towards the tip(c) Higher pressure region exists at the top surface(d) Streamlines on the bottom surface bend towards the tipI got this question by my college professor while I was bunking the class.This key question is from Downwash and Induced Drag topic in portion Flow over Airfoils over Finite Wing of Aerodynamics
Answer» Correct choice is (C) Higher pressure region exists at the top surface For EXPLANATION: There is higher pressure region at the bottom and lower pressure at the top. Due to which the flow moves from the wing root at the bottom TOWARDS the wing-tips, turns UPWARDS and moves towards the wing root at the top surface. Thus, streamlines on the bottom surface BEND towards the tip and vice versa happens at the top surface.

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