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Polarising angle for water is 53 8'. Fin...

Polarising angle for water is 53 8'. Find the critical angle for air-water interface.

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`tan i_B=mu`
`therefore mu=tan 53^@8'=1.3335`
`sin C =(1)/(n)=(1)/(1.335)=0.7499`
`therefore C=48^@ 34'`
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