Which of the following options are correct regarding prism?

Options

A. A ray of light will not come out of a prism (whatever be the angle of incidence) if `Agt2C` i.e.
if `mugtcosec (A//2)`
B. Deviation will be maximum when angle of incidence i is maximum i.e. `i=90^@`
C. In case of minimum deviation
(i) angle of incidence i=angle of emergence `i^'`
(ii) `r=r^'=A/2`
(iii) `mu=(sin((A+delta_m)/(2)))/(sin(A/2))`
(iv) If the prism is equilateral (or isosceles), the ray inside the prism will be parallel to its base
D. All options are correct

Answer

D