(A) : A man is on the northern bank of a river. To cross the river in a shortest time he should swim due south.
(R) : Man should move opposite to the river flow to cross in shortest time.

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(A) is true but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

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

answer is C.

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Detailed Solution

To cross the river in shortest time, man should swim perpendicular to the water flow to maximize his velocity to cover the width of the river.

(A) is true but (R) is false.

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