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In Young' s double slit experiment, two ...

In Young' s double slit experiment, two monochromatic light of wavelengths 650 nm and 520 nm are used to form an interference pattern . Seprsation between the two slits is `2xx 10^(-3)` m and screen is 1.20 m away from the slits. At what minimum distance apart from the central maxima, bright fringes due to both the waves will be overlapped?

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The correct Answer is:
`1.56 xx 10^(-3)`
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