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Standard IX

Physics

Derivation of Position-Time Relation by Graphical Method

A river is fl...

Question

A river is flowing from west to east with a speed of $5 m m i n^{- 1}$ . A man can swim in still water with a velocity of $10 m m i n^{- 1}$ . In which direction should the man swim w.r.t the ground so as to take the shortest possible path to go to the south?

30^{\circ}

east of south

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30^{\circ}

west of south

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90^{\circ}

west of south

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30^{\circ}

east of north

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Solution

The correct option is C $90^{\circ}$ west of south
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A river is flowing from west to east with a speed of 5 m min−1. A man can swim in still water with a velocity of 10 m min−1. In which direction should the man swim w.r.t the ground so as to take the shortest possible path to go to the south?

The correct option is C 90∘ west of southundefined

A river is flowing from west to east with a speed of $5 m m i n^{- 1}$ . A man can swim in still water with a velocity of $10 m m i n^{- 1}$ . In which direction should the man swim w.r.t the ground so as to take the shortest possible path to go to the south?

The correct option is C $90^{\circ}$ west of south
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