At what values fo the refractive index of a recantangular prism can a ray travel as shwon in figure. The section of the prism is an isoseless triangle and the ray in normally incident onto the face `AC`.

Answer

`n gt sqrt(2)`

Explanation

`I gt sin^(-1) ((1)/(mu))`
`rArr sin ((pi)/(4))gt((1)/(mu)) rArr mu gt (1)/((sin)(pi)/(4)) rArr mu gt sqrt2`