In Figure a light wave along ray r1 reflects once from a mirror and a light wave
Question:
In Figure a light wave along ray r1 reflects once from a mirror and a light wave along ray r2 reflects twice from that same mirror and once from a tiny mirror at distance L from the bigger mirror. (Neglect the slight tilt of the rays.) The waves have wavelength 620 nm and are initially in phase.
(a) What is the smallest value of L that puts the final light waves exactly out of phase?
(b) With the tiny mirror initially at that value of L/λ, how far must it be moved away from the bigger mirror to again put the final waves out of phase?
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The fact that wave W reflects two additional times has no ...View the full answer
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Related Book For 
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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