What is the minimum thickness of a thin film required for constructive interference in the reflected light from it? Given, the refractive index of the film 
, wavelength of the light incident on the film 
.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
: The condition for constructive interference in a thin film of thickness 
and refractive index 
in the reflected system, for normal incidence is
For minimum thickness, 
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