The speed of light in vacuum and in two different glasses is given as below: (a) Calculate the absolute refractive indexes of flint glass and crown glass (b) Calculate the relative refractive index for light going from crown glass to flint glass j
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(a) nflint = Speed of light in vacuum/speed of light in flint glass = 3 × 108/1.86 × 108 = 1.61
ncrown = speed of light in vacuum/speed of light in crown glass = 3 × 108/1.97 × 108 = 1.52
(b) crownnflint = speed of light in crown glass/speed of light in flint glass = (1.97 × 108)/(1.86 × 108) = 1.059
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