A ray of light incident on face `AB` of an equilateral glass prism, shows minimum deviation of `30@` .Calculate the speed of light through the prism.

Explanation

Calculation of speed of light.
`mu=(sin((A+deltam)/2))/(sin(A/2))=(sin((60^(@)+30^(@))/2))/(sin((60^(@))/2))=sqrt(2)`
Also `mu=c/vimpliesv=(3xx10^(8))/(sqrt(2))m//s`
`=2.122xx10^(8)m//s`