There are two incline planes AO and OB inclined at 45^(@) and60^(@) respectively with the horizontal as shown in the figure. When a man moves on the incline plane AO with speed 10 m/s. he oberves that the rain drops are falling45^(@) with the vertical. When the man moves on the inclined plane OB with speed 20 m/s. he observes that the raindrops are falling vertically downward. Then actual speed of rain is

There are two incline planes AO and OB inclined at 45^(@) and60^(@) re

1.	There are two incline planes AO and OB inclined at 45^(@) and60^(@) respectively with the horizontal as shown in the figure. When a man moves on the incline plane AO with speed 10 m/s. he oberves that the rain drops are falling45^(@) with the vertical. When the man moves on the inclined plane OB with speed 20 m/s. he observes that the raindrops are falling vertically downward. Then actual speed of rain is
Answer» `5sqrt(2)m//s` `20 sqrt(2)m//s` `10 sqrt(2)m//s` None of these Answer :C