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A vessel of depth d is half filled with ...

A vessel of depth d is half filled with a liquid of refractive index `mu_1` and the other half is filled with a liquid of refractive index `mu_2`. The apparent depth of the vessel, when looked at normally, is

A

`(x(mu_(1)+ mu_(2)))/ (2mu_(1)+mu_(2)`

B

`(xmu_(1)+ mu_(2))/ (2(mu_(1)+mu_(2))`

C

`(xmu_(1)+ mu_(2))/ ((mu_(1)+mu_(2))`

D

`(2x(mu_(1)+ mu_(2)))/ (mu_(1)mu_(2)`

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