1.

Statement I: The uplift of the wing of an aircraft moving horizontally is caused by a pressure difference between the upper and lower faces of the wing. Statement II: The velocity of air moving along the upper surface is higher than that along the lower surface.

Answer»

Statement I is TRUE, statement II is true , statement II is a CORRECT EXPLANATION for statement I.
Statement I is true, statement II is true , statement II is not a correct explanation for statement I.
Statement I is true, statement II is FALSE.
Statement I is false, statement II is true.

Answer :A


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