A man standing on a road has tohold his umbrella at 30^(@) with the vertical to keep the rain away. He throws the umbrella and starts running at 10 kmph. He find that rain drops are hitting his head vertically. The speed of rain drops relative to the ground is

A man standing on a road has tohold his umbrella at 30^(@) with the ve

1.	A man standing on a road has tohold his umbrella at 30^(@) with the vertical to keep the rain away. He throws the umbrella and starts running at 10 kmph. He find that rain drops are hitting his head vertically. The speed of rain drops relative to the ground is
Answer» 10 KMPH 20 kmph `10 SQRT(3)` kmph `20 sqrt(3)` kmph Answer :B