****Monochromatic Light****


the speed of light in vacuum is constant and does not depend on the frequency of the wave
however light [Group Velocity](https://texonom.com/group-velocity-6b7fe21b28864127a3288b69101d1ca2) cannot overtop [Speed of Light](https://texonom.com/speed-of-light-7f56f8bd5d7344c28bef9ec3e6ec3aa2) 









