Optics Question 845
Question: From a medium of index of refraction , monochromatic light of wavelength is incident normally on a thin film of uniform thickness L and index of refraction . The light transmitted by the film travels into a medium with refractive index .The value of minimum film thickness when maximum light is transmitted If is
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Equation of path difference form maxima in transmission (or weak reflection)
(notice that