MHT CET 2025 Physics question
In Young's double slit experiment, the distance between screen and aperture is 1 m. The slit width is 2 mm. Light of 6000 is used. If a thin glass plate ( = 1.5) of thickness 0.04 mm is placed over one of the slits, then there will be a lateral displacement of the fringes by
Answer: (B)
Solution
A thin plate of refractive index and thickness over one slit introduces an extra optical path , which shifts the fringe pattern by (independent of wavelength). With m, m, , m:
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