CBSE Class 12 Physics 2023 Outside Delhi Set 3 Paper

Question : 7

Total: 13

A ray of light travels a distance of 12.0m in a transparent sheet in 60‌ns. The refractive index of the sheet is

Solution: 👈: Video Solution

Speed of light in the sheet ‌=‌

12m

60×10−9 s

‌=2×108ms−1
Speed of light in vacuum =3×108ms−1
So, the refractive index of the sheet =‌

3×108

2×108

=1.5

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