v = c/n = 3×10⁸/1.5 = 2×10⁸ m/s
Back to NEET UG 2026 Optics
NEET UG 2026 — Physics Optics
easy
mcq
2026
Official previous-year question
Verified 30 May 2026.
Question
The refractive index of glass is 1.5. The speed of light in glass is:
Options
- A
3 × 10⁸ m/s
- B
2 × 10⁸ m/s
- C
1.5 × 10⁸ m/s
- D
4.5 × 10⁸ m/s
Solution
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