Question

Fringes are formed by a Fresnel’s bi-prism in the focal plane of a reading microscope, which is 100
cm from the slit. A lens inserted between the biprism and the microscope gives two images of the slit
in two positions. In one case the two images of the slit are 4.050 mm and in other, they are 2.900 mm
apart. If the sodium light (λ=589.3 nm) is used, find the distance between the interference fringes.

Answer 1

Answer:

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Explanation:

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