a) In which medium does the light move faster water or crown glass? b) What is the refractive index of crown glass with respect to water c) Define Snell’s law
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In water, the refractive index is 1.3 and in glass, it is 1.5. Therefore, light travels faster through water, than it travels through glass.
Refractive index of glass - n1 = 1.5
Refractive index of water - n2 = 1.3
n1 / n2 = 15 / 13 = 1.15
Snells law - The ratio of sine of angle of incidence to the sine of angle of refraction , for the given colour of light for a given pair of media is called Snells law of refraction
sin i / sin r = constant
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