write basic cause of refraction of light
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Refraction is caused by light passing from one medium to another (from air to water, for example) and experiencing a change in ... A: The basic properties of light are its wavelength, frequency, energy and speed. so when light travels from rarer to dense it bends towards normal. when travels from denser to rarer it bends way from normal.
absolute refractive index= it is the ratio between the speed os light in vacuum to the speed of light in respective medium.
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Refraction is caused by light passing from one medium to another
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