A double slit experiment is performed with light of wavelength 500 nm . A thin film of thickness 2 μ μ m and refractive index 1.5 is introduced in the path of the upper beam. The location of the central maximum will
Text Solution
Verified by ExpertsThe correct answer is:
C
If shift is equal to n fringes width, then
Since a thin film is introduced in upper beam. So shift will be upward.
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