In a biprism experiement, by using light...

In a biprism experiement, by using light of wavelength `5000Å`, `5mm` wide fringes are obtained on a screen `1.0m` away from the coherent sources. The separation between the two coherent sources is

`1.0 mm`

`0.1 mm`

`0.05 mm`

`0.01` mm

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