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Two slits, 4 mm apart, are illuminated b...

Two slits, 4 mm apart, are illuminated by light of wavelength `6000 Å`. What will be the fringe width on a screen placed 2 m from the slits

A

`0.12 mm `

B

`0.3 mm`

C

`3.0 mm`

D

`4.0 mm`

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The correct Answer is:
B
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