A large circle has a diameter of 200 m
Subject: Physics / General Physics
A large circle has a diameter of 200 m. At the east, south and west ends of the circle are plane mirrors. A 532 nm laser beam starts at the north end and reflects from the the east, south and west mirrors before returning to its starting point.
(a) What was the angle of reflection from each mirror?
(b) How long did it take the beam to make the round trip?