Physics, asked by meenakshipvns, 9 months ago

a person can swim in still water at 5 kmph he aims on one bank of the river at an angle of 30 degrees with the normal to the flow, to reach opposite point of start in 1/root3 hr. the width of river is

Answers

Answered by harshitbhai361

Answer:

Option B

Explanation:

The man has to travel 1.5km perpendicular to the flow to cross the river.And the velocity of the man is at 60 degree with flow, so component of man's velocity perpendicular to flow is vSin60=5×23

time taken will be speeddistance=5×231.5=0.35hr.

so best option is B.

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