Question
Download Solution PDFFor which of the following media is the absolute refractive index almost equal to one?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Air.
Key Points
- Refractive Index of a medium:
- It tells the capacity of the medium to bend a light ray when it passes through.
- The Refractive index is inversely proportional to the speed of the light.
- It is a dimensionless quantity.
- The absolute refractive index of a medium:
- It is expressed as the ratio speed of light in vacuum to the speed of light in the medium.
- It is a comparison of the speeds of light of different media.
- The speed of light in air is almost equal to the speed of light in a vacuum. So, absolute refractive index, μ = c / c = 1.
Additional Information
| Medium | Absolute Refractive index |
| Vacuum | 1 |
| Air | 1.007 |
| Ice | 1.31 |
| Water | 1.33 |
| Kerosene | 1.44 |
Last updated on Jul 15, 2025
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