The refractive index of glass is 1.5. The speed of light in vacuum is 3 × 108 m/s. The speed of light in glass is6 × 108 m/s2 × 108 m/s1.5 × 108 m/s4.8 × 108 m/s
Question
The refractive index of glass is 1.5. The speed of light in vacuum is 3 × 108 m/s. The speed of light in glass is6 × 108 m/s2 × 108 m/s1.5 × 108 m/s4.8 × 108 m/s
Solution
The speed of light in a medium is given by the formula:
v = c/n
where: v is the speed of light in the medium, c is the speed of light in vacuum, and n is the refractive index of the medium.
Given that the refractive index of glass (n) is 1.5 and the speed of light in vacuum (c) is 3 × 10^8 m/s, we can substitute these values into the formula to find the speed of light in glass:
v = (3 × 10^8 m/s) / 1.5 = 2 × 10^8 m/s
So, the speed of light in glass is 2 × 10^8 m/s.
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