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In a Young's double-slit experiment the ...

In a Young's double-slit experiment the fringe width is `0.2mm`. If the wavelength of light used is increased by 10% and the separation between the slits if also increased by 10%, the fringe width will be

A

`0.20 mm`

B

`0.401 mm`

C

`0.242 mm`

D

`0.165 mm`

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A
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