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The distance between the first and seven...

The distance between the first and seventh bright fringes formed in a biprims experiment is `(lamda=6000Å,D=1.0m,d=1.2mm)`

A

`0.003m`

B

`0.03 m`

C

`3xx10^(-4)m`

D

`0.3m`

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The correct Answer is:
A

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