The ratio of the speed of light in a vacuum to the speed of light in a transparent material is called the index of refraction
b) index of refraction
Three light-related phenomena are the subject of extensive research.
1) Rainfall's ability to disperse sunlight in the atmosphere.
2) The changing degrees of refraction of white light, which results in the construction of a rainbow arch.
3) The complete interior reflection of the raindrop. Refraction happens when light enters one medium and then exits another, producing our reaction.
Refraction, which is indicated by the light's bending or change in direction, can occur when electromagnetic energy in the form of visible light passes from one substance or medium to another.
Total internal reflection happens when light rays enter a right-angled glass prism at an angle of incidence larger than the critical angle.
Learn more about refraction here:
https://brainly.com/question/14760207
#SPJ4
