Which of the following statement is `//` are correct about the refraction of light from a plane surface when light rays is incident in denser medium. `[` C is critical angle `]`

Options

A. The maximum angle of deviation during refraction is `(pi//2)-C`, it will be at angle of incidence C
B. The maximum angle of deviation for all angles of incidence is `pi-2C`, when angle of incidence is slightly greater than C
C. If angle of incidence is less than C, then deviation increases if angle of incidence ia also inicreased
D. If angle of incidence is greater than C, then angle of deviation decreases if angle of incidence is increased

Answer

a.,b.,c.,d.

Explanation