Explain the laws of refraction and how they rel... - SS1 Physics Light And Optics Question

The laws of refraction state that when light passes from one medium to another, it bends or changes direction. The first law states that the incident ray, the refracted ray, and the normal to the interface at the point of incidence all lie in the same plane. The second law, known as Snell's law, mathematically relates the angles of incidence and refraction with the refractive indices of the two media. The angle of incidence is the angle between the incident ray and the normal, and the angle of refraction is the angle between the refracted ray and the normal.

The refractive index is a measure of how much light is bent when passing through a medium. It is the ratio of the speed of light in a vacuum to the speed of light in the medium. The laws of refraction explain why light bends when it passes from air to water, glass to air, or any other two different media.