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)`

Explanation

`delta=i+e-A`
`delta_(min)=60^(@)` when `i=e`
`therefore60^(@)=2i-A=2(60^(@))-A` `thereforeA=60^(@)`
`thereforemu=(sin((A+delta_(min))/(2)))/(sin((A)/(2)))=(sin((60+60)/(2)))/(sin((60)/(2)))=sqrt(3)`