1.

The refractive index of diamond is 2.47 and that of glass is 1.51. How much faster does light travel in glass thanin diamond?2.

Answer»

Given:

The refractive index of diamond, μ = 2.47 ----------------------(1)

that of glass, μ' = 1.51 -----------------------(2)

Asrefractive index = c/v

c be the velocity of light in vacuum while v is the velocity of light in that medium

Taking the ratio:

μ/μ' = v'/v = 2.47/1.51 = 1.636

=> v' = 1.636 times v

ie velocity in glass medium = 1.636 times the velocity of the light in diamond



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