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In Young's doubIe sIit experiment, seper...

In Young's doubIe sIit experiment, seperation between two coherent sources is 0.90 mm and fringes are formed at adistance I m from the sIits . If the second dark fringe is formed at a distance I mm from the centraI band , then detemine the waveIength of the monochromatic Iight used.

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The correct Answer is:
`6 xx 10^(-5)` cm
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