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  • An aeroplane is to along straight line from to , and b

An aeroplane is to along straight line from A to B, and back again. The relative speed with respect to wind is V. The wind blows perpendicular to line A B with sped V. The distance between A and B is l. The total time for the round trip is -

Option: 1

\frac{2l}{\sqrt{v^{2}-u^{2}}}


Option: 2

\frac{2vl}{v^{2}-u^{2}}


Option: 3

\frac{2vl}{v^{2}-u^{2}}


Option: 4

\frac{2vl}{\sqrt{v^{2}+u^{2}}}


Answers (1)

best_answer

velocity along the line in both side will be same.
v^{\prime}=\sqrt{v^2-v^2}
\text { So, } \text { time }=\frac{\text { Distance }}{\text { velocity }}=\frac{2 l}{\sqrt{v^2-v^2}} 

Posted by

Sanket Gandhi

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