Question

If the speed of light in vacuum is $Cm/sec$, then the velocity of light in a medium of refractive index $1.5$ is

• A. $1.5\times C$
• B. $C$
• C. $\frac{C}{15}$
• D. Can have any velocity

Answer 1

Answer: (C)

$\mu =\frac{C}{C_m}\Rightarrow C_m=\frac{C}{1.5}$