The speed of light in air is 3 X 10⁸m/s. What will be the speed of light in glass of
refractive index 1.5?
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Answer:
Refractive index of glass is defined as the ratio of the speed of light in vacuum to the speed of light in glass.
Refractive index of glass, n
g
=
Speed of light in glass
Speed of light in vacuum
Therefore, n
g
=
2×10
8
3×10
8
=
2
3
.
Explanation:
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