In a Young's double slit experiment, the...

In a Young's double slit experiment, the angular separation of the interference fringes on a distance screen is `0.04A^(0)`. The angular separation if the entire apparatus is immersed in a liquid of R.I. `4/3` is `0.0nA^(0)`, then what is the value of `n`?

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`:.` Angular separation is directly proportional to wave length

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