1.

If the critical angle for total internal reflection from a medium to vacuum is 30^(@), then velocity of light in the medium is

Answer»

`6 xx 10^(8) m//sec`
`2 xx 10^(8) m//sec`
`3 xx 10^(8) m//sec`
`1.5 xx 10^(8) m//sec`

Solution :`mu = (1)/(sini_(c)) = (c )/(v)`


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