MP Board · Class 10 · Science · Light – Reflection and RefractionWhat do you mean by the absolute refractive index of a medium?
Step-by-Step Solution
The absolute refractive index of a given transparent medium is defined mathematically as the ratio of the speed of light in vacuum or air to the speed of light traveling inside that specific medium. It is denoted by the letter n or mu. Since light travels fastest in a vacuum, the absolute refractive index of any medium is always greater than one. It has no units because it is merely a dimensionless ratio of two similar physical quantities representing speeds of light.
💡 Study Guide: This question tests core syllabus concepts from Light – Reflection and Refraction. For formulas, key summaries, and mock exam reference guides, read the full Light – Reflection and Refraction Revision Notes.