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x-y plane separates two media, zge0 con...

x-y plane separates two media, `zge0` contains a medium of refractive index 1 and `zle0` contains a medium of refractive index 2. A ray of light is incident from first medium along a vector`hati+hatj-hatk`. Find the unit vector along the refracted ray.

A

`1/(2sqrt(3))hati+1/(2sqrt(3))hatj-sqrt(5/6)hatk`

B

`1/(2sqrt(3))hati+1/(2sqrt(3))hatj-1/(2sqrt(3))hatk`

C

`hati+hatj-hatk`

D

None of these

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The correct Answer is:
A
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