The refractive index of a medium has

A. the unit m/s

B. the unit dioptre

C. the unit metre

D. no unit

Doubtly AI Asked 24 Oct 2026 AI-verified · Oct 2026 ssc 10th Save WhatsApp Report

1 answer

Best answer

Answer: D. no unit

\(n = \frac{c}{v}\) is a ratio of two speeds, so it has no unit.

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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