Rain is falling at an angle of `30^(@)` from the vertical due to the wind with a speed of 40 m/s. A car is travelling horizontally in the direction opposite to the wind, at a speed of 40 m/s. at what angle from the vertical will it experience the rain falling from?

Options

A. `30^(@)`
B. `60^(@)`
C. `90^(@)`
D. `120^(@)`

Answer

B

Explanation

The given situation can be shown in figure below,

As the rain makes an angle of `30^(@)` with the vertical So, the angle made by it with the horizontal is `theta=90^(@)-30^(@)=60^(@)`
And as the car is moving in horizontal direction with the same speed as that of the rain. So, the rain appears to him falling at an angle of `60^(@)`.