Question

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A swimmer can swim at speed v, in still water. River
flow speed is variable given by v of river = v.y/a where y
is the distance from one bank of the river and a is
width of river. If swimmer crosses the river in
shortest possible time then drift of the swimmer in
this case is
(1 ) River
(2 )river ( 3) a/2 ( 4 ) a/4​

Answer 1

Answer:

[tex] (3)a/2 [\tex]

Explanation:

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