The refractive index of water is \(\frac{4}{3}\). The speed of light in water is

A. \(4 \times 10^8\) m/s

B. \(2 \times 10^8\) m/s

C. \(2.25 \times 10^8\) m/s

D. \(1.33 \times 10^8\) m/s

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

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Answer: C. \(2.25 \times 10^8\) m/s

\(v = \frac{c}{n} = \frac{3 \times 10^8 \times 3}{4} = 2.25 \times 10^8\) m/s.

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

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