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A river of width 'd' with straight paral...

A river of width 'd' with straight parallel banks flows due North with speed u. A boat, whose speed is v relative to water, starts from A and crosses the river. If the boat is steered due West and u varies with y as `u=(y(d-y)v)/d^(2)` then answer the following questions.

The time take by boat to cross the river is

A

`d/(sqrt(2)v)`

B

`d/v`

C

`d/(2v)`

D

`(2d)/v`

Text Solution

Verified by Experts

The correct Answer is:
B
Time taken `=d/v_(y)=d/v`
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