question_answer

Light rays from a source are incident on a glass prism of index of refraction \[\mu \] and angle of prism \[\alpha \]. At near normal incidence, the angle of deviation of the emerging rays is [MP PMT 1993]

A)            \[(\mu -2)\alpha \]            

B)            \[(\mu -1)\alpha \]

C)            \[(\mu +1)\alpha \]           

D)            \[(\mu +2)\,\alpha \]