The velocity of light in air is \[3\times {{10}^{8}}m{{s}^{-1}}\] and – McqOptions

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1.	The velocity of light in air is \[3\times {{10}^{8}}m{{s}^{-1}}\] and in glass is \[2\times 108m{{s}^{-1}}\].. The refractive index of glass w.r.t air is
A.	2/3
B.	3/2
C.	4/3
D.	9/4
Answer» B. 3/2

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