Optics Question 870
Question: To produce a minimum reflection of wavelengths near the middle of visible spectrum (550 nm), how thick should a coating of
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: A
Solution:
[a] The optical path difference needed for destructive interference is
Note that 2nd is the total optical path length that the rays traverse when n=0.
