Question

the absolute refractive index of Ruby is 1.7 find the speed of light in Ruby the speed of light is vacuum in 3 into 10 to the power 8 metre per second​

Answer 1

We know that...

Refractive index, n = c/v

v = c/n

v = (3x10^8)/1.7

v = 1.76x10^8 m/s

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Answer 2

Explanation:

n is c/v

v is c/n

v is (3.10^8)/(1.7)

v is 1.76 . 10^8