1.

calculate the ri of the material of a glass slab. given that the speed of light in glass slab is 2×10^8m/s and in air is 3×10^8m/s. ​

Answer»

tion :Reflective index of AIR is 1 LET's saySpeed of light in air X Ri in air = Speed of light in glass slab x Ri in glass slab3x10^8m/s x 1 =2x10^8m/s x Ri gTherefore,Ri G = 3x10^8m/s / 2x10^8m/s        = 1.5Answer :So the reflective index of glass would be 1.5



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