In a biprism experiment, the distance between the slit and the focal plane of the eyepiece is 1.2 mand the wavelenght of light used is 5000Å. When a convex lenz is interposed (between the biprism and eyepiece) the images of the slits in the two positios are 5mm and 1.8 mm part. the distance betwene the centre of the pattern and twelfth dark band is

In a biprism experiment, the distance between the slit and the focal p

1.	In a biprism experiment, the distance between the slit and the focal plane of the eyepiece is 1.2 mand the wavelenght of light used is 5000Å. When a convex lenz is interposed (between the biprism and eyepiece) the images of the slits in the two positios are 5mm and 1.8 mm part. the distance betwene the centre of the pattern and twelfth dark band is
Answer» `1.3XX10^(-3) m` `2.2xx10^(-3) m` `3.3xx10^(-3) m` `2.3xx10^(-3) m` Solution :`x_(12d)=11.5beta=11.5(Dlamda)/(d)=(11.5xx1.2xx5xx10^(-7))/(3xx10^(-3))` `=2.3xx10^(-3)m`

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