The cause of refraction is change of speed of light in different mediums.

An initially parallel cylindical beam travels in a medium of refractive index mu(I)=mu_0+mu_2I ,where mu_0 and mu_2 are positive constants and I is the intensity of the light beam.The intensity of the light beam is decreasing with increasing radius. The speed of the light in the medium is

Light travels from air to water of refractive index 1.33. calculate the speed of light in water, if speed of light in air is 3.0xx10^8 m/s

What is the cause of dispersion of light?

What is the basic cause of refraction of light?

What is the basic cause of refraction of light?

The refractive index of a material is sqrt3 . What is the angle of refraction if the unpolarised light is incident on it at the polarising angle of the medium.

State the condition of total internal reflection. Calculate the speed of light in the medium whose critical angle of 45^@ .