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(A): A man is on the northern bank of a ...

(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.

A

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

B

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

C

(A) is true but (R) is false

D

(A) is false but (R) is true

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-MOTION IN A PLANE -Exercise -I
  1. A boat moves relative to water with a velcity which is .n. times the r...

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  2. Set the drifts suffered by boat in increasing order. (a) d=1000 m V(...

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  3. (A): A man is on the northern bank of a river. To cross the river in a...

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  4. Keeping the velocity of projection constant, the angle of projection i...

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  5. Match list I with list II for a projectile.

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  6. A projectile has

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  7. Two particles are projected in air with speed u at angles theta(1) and...

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  8. If a body is projected with angle theta to the horizontal, then ·

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  9. (A): The path followed by one projectile as observed by another projec...

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  10. Two bullets A & B fired simultaneously, horizontally and with differen...

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  11. A number of bullets are fired horizontally with different velocities f...

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  12. For body thrown horizontally from the top of a tower,

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  13. A stone is just dropped from the window of a train moving along a hori...

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  14. A and B are two trains moving parallel to each other. If a ball is thr...

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  15. In a projectile motion the velocity (a) is always perpendicular to t...

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  16. A boy is projected from a point with different angles of projection 20...

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  17. Two particles are projected from the same point with the same speed at...

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  18. A body is projected with an initial speed of 100 sqrt(3) ms^(-1) at an...

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  19. Two bodies are projected at angles 30^(@) and 60^(@) to the horizontal...

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  20. Velocity of the body on reaching the ground is same in magnitude in th...

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