A transparent film of refractive index 2.0 is coated on a glass s… | JEE Main 2025 Physics PYQ

MCQEasyJEE Main 2025 · 22 January, Shift 2Diffraction & Polarisation

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 $550 \, \text{nm}$ ?

A
$94.8 \, \text{nm}$
B
$275 \, \text{nm}$
C
$137.5 \, \text{nm}$
D
$68.7 \, \text{nm}$

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