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In a biprism expeirmentthe fringes are observed in the focal plane of eyepiece at a distance of 1 mfrom the slit. The distance between 10^(th) bright band from the central bright band is 0.22 . When convex lenz is interposed between the biprism the slit the distance betwen the magified imaes of the siit is found to be 0.93 cm. The wavelenght of light is uded is |
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Answer» `5820Å` `(d)/(d_(1))=(U)/(v)` `:.d=(25xx0.93)/(75)=0.31cm=31xx10^(-4)m` `lamda=(d)/(D)beta=(31xx10^(-4)xx22xx10^(-5))/(1)=6820xx10^(-10)m` |
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