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The refractive index of glass is 1.5. The speed of light in air is 3 × 10⁸ m/s. What will be the speed of light in the glass?

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The refractive index of glass is 1.5. The speed of light in air is 3 × 10⁸ m/s. What will be the speed of light in the glass? Answer: 2 × 10⁸ m/s

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.