The curve of angle of incidence versus angle of deviaton wshown has been plotted for prism.
Q. The value of refractive index of the prism used is

Options

A. `sqrt(3)`
B. `sqrt(2)`
C. `(sqrt(3))/(sqrt(2))`
D. `(2)/(sqrt(3))`

Answer

A

Explanation

`delta_("min") = 2i - A , 60 = 2 xx60 - Å, A = 60^(@)`
`mu = ("sin"((A+delta_("min"))/(2)))/("sin"(A)/(2)) = ("sin"((60 +60)/(2)))/("sin"(60)/(2))`
mu = (sqrt(3)//2)/(1//2)= sqrt(3)`