Question

The absolute refractive index of ruby is 1.6.find the speed of light in ruby

Answer 1

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Correct Question:-

The absolute refractive index of ruby is 1.7 Find the speed of light in ruby.

Answer:-

Given,

The absolute refractive index of ruby = 1.7

The speed of light in vaccum = 3×10^8 m/s

To Find,

• Speed of light in ruby

Calculations:-

n=c/v

• n=refractive index of medium

• C= speed of light in air

• V=velocity of light in medium

Here,

According to the given question

n=1.7

C=3×10^8 m/s

We have to find the speed of light in air

substituting the given values,

1.7 = 3×10^8 m/s /V

V = 1.7×10^8 m/s

So,The speed of light in ruby is 1.7×10^8 m/s

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