Determination of the thickness of paper by obtaining fringes in wedge shaped air film.

OBSERVATIONS:-

a) TO FIND FRINGE WIDTH, beta :

Sr. No.	Position of nth dark fringe			Position of (n+N)th dark fringe			N	Fringe width, beta = [(x₂ - x₁) / N] (cm)	Mean beta (cm)
Sr. No.	MSR (cm)	VSD	TR (x₁) (cm)	MSR (cm)	VSD	TR (x₂) (cm)	N	Fringe width, beta = [(x₂ - x₁) / N] (cm)	Mean beta (cm)
1 2 3	1.35 1.9 2.5	0.005 0.025 0.025	1.355 1.925 2.525	1.9 2.5 3.1	0.025 0.025 0.025	1.925 2.525 3.125	30 30 30	0.019 0.020 0.020	0.0197