Statement I : Aeroplanes are made to run on the runway before take off, so that they acquire the necessary lift.
Statement II : Lift of aeroplane is based on Bernoulli's theorem.

Easy

A

If both statement I and statement II are true and statement II is the correct explanation of statement I.
B

If both statement I and statement II are true but statement II is not the correct explanation of statement I.
C

If statement I is true but statement II is false
D

If both statement I and statement II are false

Solution

Usually the air does not strike the wing of the aeroplane with large velocity. To get the lift, the aeroplane runs for some distances on the runway before taking off. Due to the special shape of wings, the velocity of the layers of air above the wings increase (becomes layers came near each other) and hence pressure decrease. Due to this aeroplane gets uplift.

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