(A) : A spinning cricket ball moving through air is not deflected from its normal trajectory
(R) : Magnus effect is an application of Bernoulli's principle

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

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'

'A' is rue and 'R' is false

'A' is false and 'R' is true

answer is D.

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Detailed Solution

When travelling through air, a spinning ball deviates from its parabolic trajectory.
Consider a situation where the ball is travelling forward and the air is moving backward in relation to the ball.
The ball experiences dynamic lift as a result, deviating from its parabolic trajectory. This phenomenon is called magnus effect which is an application of Bernoulli's principle.

Hence the correct answer is 'A' is false and 'R' is true.

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