calculate speed of light in a medium whose critical angle is 30 degree.

Refractive index is given by, n = 1/Sin ic , where iis critical angle = 300
So, n = 2
As, n = c/v , where c - speed of light in vacuum and v is the speed of light in medium.
So,  speed of light in given medium (v)  = c/n = 1.5 X108 m /sec

  • 31

Refractive index of medium , n = 1/sin(Ic) = 2.

So spped of light in medium = c/n = 1.5 x 108 m/s.

  • 8

Refractive index of medium , n = 1/sin(Ic) = 2.

So speed of light in medium = c/n = 1.5 x 108m/s.

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