Question

If the speed of light in glass is 2 x 108 m/s and that in air is 3 x 10 m/s.
Calculate the refractive index of glass with respect to air.​

Answer 1

Hey mate ,

When we find refractive index in respect to air it is called as Absolute Refractive Index

= C/V

= speed of light in medium / speed of light in vaccum

= 2×10^8 / 3×10

= 2×10^7 / 3

Thus Absolute Refractive Index to glass is 2×10^7/3

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