PH-490

Refraction

Physics · Secondary 3 · Medium · Refraction

Light travels at

3.0 \times 10^{8}\,\text{m s}^{-1}

in vacuum and at

2.0 \times 10^{8}\,\text{m s}^{-1}

in a certain transparent material.

What is the refractive index

n

of the material?

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