The ratio of speed of light in vaccum to the speed of light medium is __________ .

The ratio of the speed of light in air to the speed of light in another medium

The speed of light in the medium is

When light moves from one medium to another (i) the frequency of light remains same and wavelength changes (ii) refractive index of a medium is the ratio of speed of light in vacuum and speed of light in medium (iii) refractive index of a medium is the ratio of wavelength of light in vacuum and wavelength in medium (iv) for denser medium, the value of refractive index is larger

The wavelength of a certain light in air and in a medium are 4560 overset@A and 3648 overset@A respectively. The speed of light in air to the speed of light in the medium is

Speed of light in a medium depends on

The speed of light in vaccum is _______ ms^(-1) .