A medium has refractive index 1.5. If the speed of light in vacuum is 3 × 10⁸ m/s, calculate the speed of light in the medium. - SchoolNGR

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A medium has refractive index 1.5. If the speed of light in vacuum is 3 × 10⁸ ...

A medium has refractive index 1.5. If the speed of light in vacuum is 3 × 10⁸ m/s, calculate the speed of light in the medium.

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Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE

A 2 × 10⁸ m/s
B 4.5 × 10⁸ m/s
C 1 × 10⁸ m/s
D 1.5 × 10⁸ m/s

Correct Answer: Option A

Explanation:
Refractive index = speed in vacuum ÷ speed in medium

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