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When a women standing on road kept her umbrella at 30^{\circ}  with the vertical. to keep Rain away. If She starts Running without umbrella with speed \sqrt{3} \mathrm{~km} / \mathrm{hr}. During This Rain Hit her head vertically: The speed of Rain drop win respect to moving women.

Option: 1

1 \mathrm{~km} / \mathrm{hr}


Option: 2

2 \mathrm{~km} / \mathrm{hr}


Option: 3

5 \mathrm{~km} / \mathrm{hr}


Option: 4

8 \mathrm{~km} / \mathrm{hr}


Answers (1)

best_answer

\tan 30^{\circ}=\left|\frac{V_{r m}}{V_m}\right| \\                                                  
V_m=\sqrt{3} V_{r m} .

\text { vrm }=\frac{v_m}{\sqrt{3}}=\frac{\sqrt{3}}{\sqrt{3}}=1 \mathrm{~km} / \mathrm{hr}

 

Posted by

Rishabh

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