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The speed of light in air is 3 x 108ms-1. What is the speed in glass with a refractive ...

The speed of light in air is 3 x 108ms-1. What is the speed in glass with a refractive index of 1.50?
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  • A 1.5 x 108ms-1
  • B 3.0 x 108ms-1
  • C 2.0 x 108ms-1
  • D 6.0 x 108ms-1
Correct Answer: Option C
Explanation:
1.5 = \(\frac{3 \times 10^8}{v}\)
v = 2.0 x 108ms-1

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