Q. If the wavelength of light in vacuum be $\lambda$, the wavelength in a medium of refractive index $n$ will be
A) $n\lambda$
B) $\frac{\lambda}{n}$
C) $\frac{\lambda}{n^{2}}$
D) $n^{2}\lambda$
Explanation
(b) $\lambda_{medium} = \frac{\lambda_{vacuum}}{\mu}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.