What is the definition of index of refraction? Give three examples that don\'t i

Question

What is the definition of index of refraction? Give three examples that don't include light through glass or water. One example must be optical, and the other two examples must be a different kind of wave (one should be mechanical.) . Each example should be a complete sentence specifying the type of wave, the change in medium that occurs, the angle of incidence of the wave, the angle of refraction, and the index of refraction these angles imply for the new medium relative to the original medium. The examples should be realistic.

Explanation / Answer

Index of refraction

Index of refraction, n of a material is a dimensionless number that describes how light propagates through that medium. It is defined as

n =c/vw

here c is the speed of light in vacuum and v isthe phase velocity of light in the medium.

For example-

1. Optical - the measuring of the degree of refraction of an eye

2. The degree to which a metal or compound can withstand heat

3. The turning or bending of any wave, sound wave, when it passes from one medium into another of different optical density.

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