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In a biprism experiment the distance bet...

In a biprism experiment the distance between the slit and the eyepiece is 100 cm. When a convex lens is introduced between the biprism and the eyepiece, images of the slit obtained in the two positions of the lens are `2 xx 10^-3 m` and `4.5 xx 10^-3m` apart.If the wavelength of light used is `6000 overset (@)(A)`, find the distance between the fourth bright band on one side and fourth dark band on the other side of central bright band.

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