Q. Velocity of light in a medium is $1.5 \times 10^{8}m/s$. Its refractive index will be
A) 8
B) 6
C) 4
D) 2
Explanation
(d) $\mu = \frac{c}{v} = \frac{3 \times 10^{8}}{1.5 \times 10^{8}} = 2$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.