Published by:
CGP EDU Academic Team
Published on: August 14, 2026
In young's double slit experiment performed using a monochromatic light of wavelength 
, when a glass plate 
of thickness 
is introduced in the path of the one of the interfering beams, the intensity at the position where the central maximum occurred previously remains unchanged. The value of 
will be:
Text Solution
Verified by ExpertsThe correct answer is:
B
Path difference at 
.
If the intensity at 
remains (maximum) unchanged, path difference must be 
.
For 
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