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Calculate the speed of light in a medium...

Calculate the speed of light in a medium whose critical angle is `30^(@)`.

Text Solution

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`"Given, critical angle, "i_(c )=30^(@)`
Refractive index of medium is
`rArr" "mu=(c )/(v)=(1)/(sini_(c ))`
`rArr" "v=c sin i_(c )=3xx10^(8)xxsin30^(@)`
`=1.5xx10^(8)m//s`
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