3. Yellow light travels through a glass block at a speed of 1.97x108 m/s. The wavelength of the light in this type of glass is 3.81x10-7 m. What is the frequency of yellow light?

Answer 1

L = V*(1/F) = V/F
F = V/L = 1.97*10^8/3.81*10^-7 Hz.