Question

Light of wavelength 550 nm in vacuum passes through a piece of crown glass of refractive index of 1.52. Find the velocity and frequency of light in crown glass.

Answer 1

V = c/1.52 = 1.99*10^8 m/s

frequency = V/(wavelength)
= 1.99*10^8/550*10^-9
= 3.61*10^14 Hz