A girl standing at point $P$ on a beach wishes to reach a point $Q$ in the sea as quickly as possible. She can run at $6 k m h^{- 1}$ on the beach and swim at $4 k m h^{- 1}$ in the sea. She should take the path

P A Q

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P B Q

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P C Q

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P D Q

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Solution

The correct option is B $P A Q$
Girl should try to reach at A and later swim from A to Q. The drift (velocity) of sea will help her to reach towards Q. Also the time taken to reach to A is quickest as compare to B, C and D

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Similar questions

Q. A girl standing at point

P

wishes to reach point

Q

in the sea quickly as possible. She can run at

6 k m h^{- 1}

on the beach and swim at

4 k m h^{- 1}

in the sea. She should take the path

Q. A girl standing at point P on a beach wishes to reach a point Q in the sea as quickly as possible. She can run at

6 k m - h^{- 1}

on the beach and swim at

4 k m - h^{- 1}

in the sea. She should take the path

Q. In figure, two circles intersect each other at points A and B . Their common tangent PQ touches the circle at points P, and Q as shown.
Prove that ,

∠ P A Q

∠ P B Q = 180

Two circles intersect each other at points A and B. Their common tangent touches the circles at points P and Q as shown in the figure.Then, the angles PAQ and PBQ are supplementary.

Q. A sea beach can be considered as an example of a marine ecosystem.

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A girl standing at point P on a beach wishes to reach a point Q in the sea as quickly as possible. She can run at 6kmh−1 on the beach and swim at 4kmh−1 in the sea. She should take the path

The correct option is B PAQGirl should try to reach at A and later swim from A to Q. The drift (velocity) of sea will help her to reach towards Q. Also the time taken to reach to A is quickest as compare to B, C and D

A girl standing at point $P$ on a beach wishes to reach a point $Q$ in the sea as quickly as possible. She can run at $6 k m h^{- 1}$ on the beach and swim at $4 k m h^{- 1}$ in the sea. She should take the path

The correct option is B $P A Q$
Girl should try to reach at A and later swim from A to Q. The drift (velocity) of sea will help her to reach towards Q. Also the time taken to reach to A is quickest as compare to B, C and D