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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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Here , `C=30^@`.
` mu=(1)/(sin C) =(1)/(sin 30^@) =(1)/(1//2)=2`
Also, `mu=(C)/(v)rArr 2=(3xx 10^8)/(v) rArr upsilon =(3xx10^8)/(2)`
`therefore` Speed of light in a medium `V=1.5 xx 10^8ms^-1`.
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