White light is incident normally on a glass plate (in air) of thickness 500 nm and refractive index of 1.5. The wavelength (in nm) in the visible region (400 nm - 700nm) that is strongly reflected by the plate is:
Text Solution
Verified by ExpertsThe correct answer is:
B
For strong reflection.
2 μ t = 
......
⇒ λ = 4 μ t, 
......
⇒ 3000 nm. 1000 nm, 600 nm, 430 nm, 333 nm.
⇒ only option is 600 nm.
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