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Light of wavelength 5000xx10^(-10)m is i...

Light of wavelength `5000xx10^(-10)m` is incident normally on a slit. The first minimum of the diffraction pattern is observed to lie at a distance of 5 mm from the central maximum on a screen placed at a distance of 3m from the slit. Then the width of the slits is

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The correct Answer is:
`1.83 xx 10^(-4) m`
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