(A) : During takeoff of an airplane, velocity of air above the wing is greater than velocity below the wing

(R) : Bernoulli's principle is based on law of conservation of energy

• By Bernoulli's theorem  the pressure of the wind over the wings becomes lower than the pressure of the wind under the wings when the wind velocity over the wings is greater than the wind velocity under the wings.
• The pressure differential between the two sides of the wings gives the airplane the necessary lift.

Hence the correct answer is Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'.