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Assertion: Aeroplanes are made to run on...

Assertion: Aeroplanes are made to run on the runway before take off, so that they acquire the necessary lift.
Reason: This is as per Bernoulli's theroem.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Usually the air does not strike the wring of the aeroplane with large velocity. To get the lift, the aeroplane runs for some distances on the runways before taking off. Due to the special shape of wrings, the velocity of the layers of air above the wings increase (becomes layers came near each other) and hence pressure decreases. Due to this aeroplane gets uplift.
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