JEE Mains · Physics · STD 12 - 10. Wave optics
A transparent film of refractive index, 2.0 is coated on a glass slab of refractive index, 1.45. What is the minimum thickness of transparent film to be coated for the maximum transmission of Green light of wavelength 550 nm . [Assume that the light is incident nearly perpendicular to the glass surface.]
- A 137.5 nm
- B 275 nm
- C 94.8 nm
- D 68.7 nm
Answer & Solution
Correct Answer
(A) 137.5 nm
Step-by-step Solution
Detailed explanation
For transmitted green light to be maxima, reflected green should be minima.…
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