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JEE MAIN 2025
22-01-2025 SHIFT-2
Question
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.]
Select the correct option:
A
68.7 nm
B
137.5 nm
C
94.8 nm
D
275 nm
✓ Correct! Well done.
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