In the given figure,the angle of reflection is

Options

A. `30^(@)`
B. `60^(@)`
C. `45^(@)`
D. None of these

Answer

C

Explanation

Given ,`y =x^(2)`
`(dy)/(dx)=2x(1)/(2)=1`
`rArr tan theta =1=mrArrtheta=45^(@)`
From the figure angle of incidence is `45^(@)` Hence angle of reflection is `45^(@)`