Q. The refractive index of water is 1.33. What will be the speed of light in water
A) $3 \times 10^{8}\ m/s$
B) $2.25 \times 10^{8}\ m/s$
C) $4 \times 10^{8}\ m/s$
D) $1.33 \times 10^{8}\ m/s$
Explanation
(b) $v = \frac{c}{\mu} = \frac{3 \times 10^{8}}{1.33} = 2.25 \times 10^{8}m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.