NCERT In-text 9.3 — Q2 - Light — Reflection and Refraction
Question: Light enters from air to glass. The refractive index of glass is 1.50. What is the speed of light in the glass? (Speed of light in vacuum c = 3 — 10⁸ m/s)
Answer: To find the speed of light in glass, we use the definition of the refractive index of a medium. The refractive index (n) of a medium is defined as the ratio of the speed of light in a vacuum (c) to...
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