Refractive indices of water, sulphuric acid, glass and carbon disulphide are 1.33, 1.43, 1.53 and 1.63. The light travel slowest in which medium?glasswatercarbon disulphide Sulphuric acid
Question
Refractive indices of water, sulphuric acid, glass and carbon disulphide are 1.33, 1.43, 1.53 and 1.63. The light travel slowest in which medium?glasswatercarbon disulphide Sulphuric acid
Solution
The speed of light in a medium is inversely proportional to the refractive index of that medium. This means that light travels slowest in the medium with the highest refractive index.
Given the refractive indices of the four substances:
- Water: 1.33
- Sulphuric Acid: 1.43
- Glass: 1.53
- Carbon Disulphide: 1.63
We can see that Carbon Disulphide has the highest refractive index. Therefore, light travels slowest in Carbon Disulphide.
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