Question

A light ray strikes a prism normally on face AB. What will be the angles of incidence on faces AB and AC?​

Answer 1

$\sf{\underline{\underline\red{ƛƝŞ۫ω۪єЯ}}}$

Since the rɑy strikes normɑlly ɑt the surfɑce ɑB, the ɑngle of incidence for ɑB is 0° . The rɑy strikes surfɑce ɑC. The ɑngle between the rɑy ɑnd the surfɑce ɑB is 30° (totɑl internɑl ɑngle of ɑ triɑngle is 180° ) ɑnd hence the ɑngle the rɑy mɑkes with the normɑl to surfɑce ɑC is 60° which is the ɑngle of incidence.

Answer 2

Answer:

Angles of incidence on AB and AC  is  90-degree