Q. Electromagnetic radiation of frequency $n$, wavelength $\lambda$, travelling with velocity $v$ in air, enters a glass slab of refractive index $\mu$. The frequency, wavelength and velocity of light in the glass slab will be respectively
A) $\frac{n}{\mu},\frac{\lambda}{\mu},\frac{v}{\mu}$
B) $n,\frac{\lambda}{\mu},\frac{v}{\mu}$
C) $n,\ \lambda,\frac{v}{\mu}$
D) $\frac{n}{\mu},\frac{\lambda}{\mu},\ v$
Explanation
(b) Frequency does not change with medium but wavelength and velocity decrease with the increase in refractive index
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.