The speed of light in a vacuum is approximately 2.99 × 10 power of 8 m/s, and the speed of light through a piece of glass is approximately 1.97 × 10 power of 8 m/s.

What is the index of refraction for the piece of glass?

0.66

1.52
1.02 × 10 power of 8
4.96 × 10 power of 8

Question

The speed of light in a vacuum is approximately 2.99 × 10 power of 8 m/s, and the speed of light through a piece of glass is approximately 1.97 × 10 power of 8 m/s. 

What is the index of refraction for the piece of glass?

0.66
  
1.52
1.02 × 10 power of 8 
4.96 × 10 power of 8

shamim · Answer

a meu b=Ca/Cb

anonymous · Answer

could you explain it a little more please

shamim · Answer

a meu b=refractive index of the medium b with respect to the medium a

shamim · Answer

Ca=light velocity in the medium a

shamim · Answer

Cb= light velocity in the medium b

anonymous · Answer

i still dont get it.