1.

refractive index of a glass sample is 1.52 and refractive index of a ruby is 1.71 if speed of luck ght in vaccum is 3*10^8 find the speed of light in glass and ruby ​

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Answer:

This MEANS that the ratio of speed of LIGHT in RUBY to that of speed if light in VACCUM is 1.71.

1.6X10^8 m/s

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