A ray of incident at 50^@ on the middle of one of the two mirros arranged at an angle of 60^@ between them. The ray then touches the second mirror, get reflectedback to the first mirror, making an angle of incidence of

A ray of incident at 50^@ on the middle of one of the two mirros arran

1.	A ray of incident at 50^@ on the middle of one of the two mirros arranged at an angle of 60^@ between them. The ray then touches the second mirror, get reflectedback to the first mirror, making an angle of incidence of
Answer» `50^@` `60^@` `70^@` `80^@` Answer :C