An electromagnetic wave of frequency enters a glass slab of refractive index

PHYSICS · Multi-part · CBSE · Physics · Waves · Waves

Problem

An electromagnetic wave of frequency

5.0\times10^{14}\,\text{Hz}

enters a glass slab of refractive index

1.5

. (Take

c = 3.0\times10^{8}\,\text{m\,s}^{-1}

.) (i) Calculate the speed of the wave inside the glass. (ii) Determine its wavelength inside the glass. (iii) Find its wavenumber

k

in the glass.