Question

what is the speed of light in a denser medium of polarising angle 30 degree​

Answer 1

Answer:



From Brewster's Law, Refractive index (R.I.) =tan(ip); ( ip is the polarizing angle of incidence.)

Therefore,

R.I.=tan(60)degrees=√3=1.732 (approx)

Now, taking 60degrees,in the place of30degrees(Snell's law) as the polarizing angle,

as in the above formula from where we have calculated the R.I.of the denser medium, the ip, mentioned is taken in the rarer medium.

Now calculate the speed of light in the denser medium (assume, other rarer medium is air/vacuum)

Speed of light in vacuum Speed of light in a medium = Refractive index of a medium

3×108Speed of light in medium = 1.732

speed of light in a denser medium of polarising angle 30 degree​=3×1081.732=1.732×108m/s (approx)