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 Jun 3, 2025
-> The Staff Selection Commission has officially released the SSC Selection Post Phase 13 Notification 2025 on its official website at ssc.gov.in.
-> A total number of 2423 Vacancies have been announced for various selection posts under Government of India.
-> The Computer Based Exam is scheduled from 24th July to 4th August, 2025. Candidates will be able to apply online from 2nd June 2025 to 23rd June 2025.
-> The SSC Selection Post Phase 13 exam is conducted for recruitment to posts of Matriculation, Higher Secondary, and Graduate Levels.
-> The selection process includes a CBT and Document Verification.
-> Some of the posts offered through this exam include Laboratory Assistant, Deputy Ranger, Upper Division Clerk (UDC), and more.
-> Enhance your exam preparation with the SSC Selection Post Previous Year Papers & SSC Selection Post Mock Tests for practice & revision.