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A vessel of height 2d is half- filled wi...

A vessel of height 2d is half- filled with a liquid of refractive index `sqrt 2` and the other half with a liquid of refractive index `n`.(The given liquids are immiscible).Then the apparent depth of the inner surface of the bottom of the vessel (neglecting the thickness of the bottom of the vessel) will be

A

`(sqrt2 n)/(d(n+sqrt2))`

B

`(nd)/(d+sqrt2)`

C

`n/(d(d+sqrt2))`

D

`(d(n+sqrt2))/(nsqrt2)`.

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