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  • The absolute refractive index of Ruby is 1.7. Find the speed of light in Ruby. The speed of light in vacuum is  </p

The absolute refractive index of Ruby is 1.7. Find the speed of light in Ruby. The speed of light in vacuum is 3 \times 10^{8} m/s.

 

 

 

 
 
 
 
 

Answers (1)

Given,

Refractive Index (R.I)of Ruby = 1.7

Speed of light in Vaccum (C) = 3 \times 10^{8} m/s.

Speed of light in Ruby (V_{R}) = ?

R.I = \frac{(Speed of light)_{vaccum}}{(Speed of light)_{medium}}=\frac{C}{V_{R}}

R.I = \frac{C}{V_{R}}

1.7= \frac{3\times 10^{8}}{V_{R}}

V_{R}=\frac{3\times 10^{8}}{1.7}

V_{R}=1.764 \times 10^{8}m/s

Posted by

Sumit Saini

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