Question

Light eneters from air to glass having refractive index 1.50.
what is the speed of light in the glass?
The speed of light in vacuum is 3x10power8 m\s

Guyz answer!
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Answer 1

Answer:

Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometers per second in glass (refractive index of 1.5).

The speed of light in vacuum is 3 x 108 ms-1. =3 — 108/1.50 = 2x 108 ms-1.

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Answer 2

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