The velocity of light in vacuum can be changed by changing

The value of velocity of light in vacuum is:

Velocity of light in water is 3/4 times the velocity of light in vacuum. Find the refractive, index of water.

The direction of light can be changed by ______

The ratio between the velocity of light in a given optical medium to the velocity of light in vacuum is called refractive index.

If c and c_(1) are the velocities of light in vacuum and in a medium respectively, then the relation of velocity of light with the refractive index of the medium will be

How is speed of light in vacuum affected by change in wavelength//intensity of light ?

How the speed of light in vacuum is affected by the change of wavelength of light?