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The critical angle of a certain medium i...

The critical angle of a certain medium is `sin ^(-1)((3)/(5))`. The polarizing angle of the medium is :

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Data: `i_( c) = sin^(-1)3/5 therefore sini_( c)= 3/5`
`n=1/(sin i_( c)) = 5/3 = 1.6667`
Also, `n=tani_(p)`
`therefore` the polarising angle, `i_(p)= tan^(-1)n=tan^(-1) 1.6667 = 59^(@)2'`
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