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In Young's double Slit experiment the tw...

In Young's double Slit experiment the two slits are d distances apart.Interference pattern is observed on a screen at a distance D from the slits . A dark frings is observed on the screen directly opposite to one of the slits. The wavelength of lights is

A

` (D^(2))/( 2d) `

B

` (d^(2))/(2D) `

C

` (D^(2))/(d) `

D

`(d^(2))/(D)`

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