Question 60Asked in RRB JE CBT-1, 19 Feb 2026, Shift 1 (9:00 AM)If a material has an absolute refractive index of 1.7, what does this imply about the
If a material has an absolute refractive index of 1.7, what does this imply about the
speed of light in that material compared to vacuum?
- ALight travels 1.7 times faster in the material than in vacuum.
- BLight travels at the same speed in both.
- CThe speed difference cannot be determined from this value.
- DLight travels 1.7 times slower in the material than in vacuum.
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Correct answer: (D) Light travels 1.7 times slower in the material than in vacuum.