Sodium light (lambda= 6xx 10^(-7)m) is u...

Sodium light `(lambda= 6xx 10^(-7)m)` is used to produce interference pattern. The observed fringe width is 0.12 mm. The angle between two interfering wave trains, is

`1xx 10 ^(-3)rad`

`1xx 10 ^(-2)rad`

`5xx 10 ^(-3)rad`

`5xx 10 ^(-2)rad`

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