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In Fig. 16.13, at what angle theta above...

In Fig. 16.13, at what angle `theta` above the horizon should the sun be situated so that its light reflected from the surface of still water of the pond be totally polarised? Given: refractive index of water `mu=1.327 " and " tan 53^(@)=1.327`.

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The correct Answer is:
`37 ^(@)`
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