Published by:
CGP EDU Academic Team
Published on: September 12, 2026
As shown in the figure, in Young's double slit experiment, a thin plate of thickness t = 10 
m and refractive index 
=1.2 is inserted infront of slit S 1 . The experiment is conducted in air ( 
= 1) and uses a monochromatic light of wavelength 
= 500 nm. Due to the insertion of the plate, central maxima is shifted by a distance of 
is the fringe-width before the insertion of the plate, The value of the x is_____.
Text Solution
Verified by ExpertsThe correct answer is:
4
(4)
Fringe shift = 
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