A flint glass and a crown glass are fitted on the two slits of a double slit apparatus. The thickness of the strips is `0.40 mm` and the separation between the slits is `0.12 cm`. The refractive index of fint glass and crown glass are `1.62` and `1.52` respectively for the light of wavelength `480 nm` which is used in the expweiment. The interference is observed on a screen a distance one meter away. (a) What would be the fringe-width? (b) At what distance from the geometrical centre will the nearest maximum be located ?

A flint glass and a crown glass are fitted on the two slits of a doubl

1.	A flint glass and a crown glass are fitted on the two slits of a double slit apparatus. The thickness of the strips is `0.40 mm` and the separation between the slits is `0.12 cm`. The refractive index of fint glass and crown glass are `1.62` and `1.52` respectively for the light of wavelength `480 nm` which is used in the expweiment. The interference is observed on a screen a distance one meter away. (a) What would be the fringe-width? (b) At what distance from the geometrical centre will the nearest maximum be located ?
Answer» Correct Answer - (a) `beta=4.0xx10^(-4)m` (b) `(beta)/(3)and(2beta)/(3)`

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