explain refraction of light
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refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium.
- refractive index or index of refraction of a material is a dimensionless number that describes how fast light travels through the material. It is defined as. where c is the speed of light in vacuum and v is the phase velocity of light in the medium.
- Total internal reflection when refraction reflection at critical angle and refraction takes place called TIR
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Explanation:
physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction
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