When the angle of incidence on a material is 60°, the reflected light is completely polarised. The velocity of the refracted ray inside the material in cm/s is:

$\frac{3}{\sqrt{2}} \times 10^8$ $0.5 \times 10^8$ $\sqrt{3} \times 10^8$ $3 \times 10^8$

$\sqrt{3} \times 10^8$

The correct answer is Option (3) → $\sqrt{3} \times 10^8$