The speed of a light wave in a certain transparent glass material is 0.663 times the speed of light in vacuum, which is 3.0 x 10 m/s. When yellow light with a frequency of 5.23 x 1014 Hz passes through this glass material, what are the index of refraction n, and the wavelength in nanometers? Index of refraction n = _ Drag answer here 350 The wavelength in the glass is_ nm. Drag answer here 380 1.64 0.663 1.51