Assuming the expression for the path difference between two interfering light waves for bright and dark fringes, obtain an expression for the fringe width. The central fringe of a double-slit interference pattern produced by light of wavelength 6000 Å shifts to the position of the 5th bright fringe on introducing a thin glass plate of refractive index 1.5 in front of one of the slits. Calculate the thickness of the plate.

Assuming the expression for the path difference between two interferin

1.	Assuming the expression for the path difference between two interfering light waves for bright and dark fringes, obtain an expression for the fringe width. The central fringe of a double-slit interference pattern produced by light of wavelength 6000 Å shifts to the position of the 5th bright fringe on introducing a thin glass plate of refractive index 1.5 in front of one of the slits. Calculate the thickness of the plate.
Answer» ANSWER :`6 MU m`

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