A swimmer can swim in still water with speed ‘ v’ and the river flowing with velocity v{/}2, To cross the river in shortest time, he should swim making angle ‘\theta ’ with the upstream. What is the ratio of the time taken to swim across in the shortest time to that in swimming across over shortest distance?

AP EAMCET Engineering 18 Sep 2020 Shift 2 Paper

Section: Physics

Question : 108 of 160

Marks: +1, -0

A swimmer can swim in still water with speed ‘v’ and the river flowing with velocity v/2, To cross the river in shortest time, he should swim making angle ‘θ’ with the upstream. What is the ratio of the time taken to swim across in the shortest time to that in swimming across over shortest distance?

cos‌θ
cot‌θ
sin‌θ
tan‌θ

Validate

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