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How is the Fringe Width of an Interference Pattern in Young'S Double-slit Experiment Affected If the Two Slits Are Brought Closer to Each Other?

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प्रश्न

How is the fringe width of an interference pattern in Young's double-slit experiment affected if the two slits are brought closer to each other?

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उत्तर

Fringe width, β = `(lambda D)/d`

∴ If d (= separation of slit ) decreases, β  will increase. 

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