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In the diagram shown, light is incident ...

In the diagram shown, light is incident on the interface between media `1` (refractive index `n_(1)`) and `2` (refractive index `n_(2)`) at angle slightly greater than the critical angle, and is totally reflected. The light is then also totally reflected at the interface between media `1` and `3` (refractive index `n_(3)`), after which it travels in a direction opposite to its initial direction, The media must have a refractive indices such that.
.

A

`mu_(1)-mu_(2)gtmu_(3)`

B

`mu_(1)^(2)-mu_(2)^(3)gtmu_(2)^(2)`

C

`mu_(1)^(2)-mu_(2)^(2)gtmu_(3)^(2)`

D

`mu_(1)^(2)+mu_(2)^(2)gtmu_(3)^(2)`

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