If a material has an index of refraction of 1.461, what is the speed of light through it? A)2.05 × 10⁸ m/s B)2.34 × 10⁸ m/s C)1.46 × 10⁸ m/s D)4.38 × 10⁸ m/s E)5.34 × 10⁸ m/s

Question

Quizplus · Accepted Answer

The speed of light in a material is calculated by dividing the speed of light in a vacuum (approximately 3.00 × 10^8 m/s) by the material's index of refraction. Thus, 3.00 × 10^8 m/s ÷ 1.461 ≈ 2.05 × 10^8 m/s.

If a Material Has an Index of Refraction of 1