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A man is holding an umbrella at angle 30...

A man is holding an umbrella at angle `30^(@)` with vertical with lower and towards himself. Which is appropriate angle to protect him from rain for his horizontal velocity `10 m//s`. Then which of the following will be true-

A

rain is falling at angle `30^(@)` with vertical. Towards the man

B

rain may be falling at angle `30^(@)` with vertical, away from the man

C

rain is falling vertically

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B

Let v= velocity of rain
Possible values of `alpha` are `-30^(@) lt alpha lt 90^(@)`
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