Science
The refractive index of diamond is 2.42. What is the meaning of this statement?
Refraction Lens
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Answer
The statement "refractive index of diamond is 2.42" means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air/vacuum i.e., the speed of light in diamond will be times the speed of light in air/vacuum.
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Find out, from Table 9.3, the medium having the highest optical density. Also, find the medium with the lowest optical density.
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No.Material Medium Refractive Index 1. Air 1.0003 2. Ice 1.31 3. Water 1.33 4. Alcohol 1.36 5. Kerosene 1.44 6. Fused quartz 1.46 7. Turpentine oil 1.47 8. Benzene 1.50 9. Crown glass 1.52 10. Canada Balsam 1.53 11. Rock salt 1.54 12. Carbon disulphide 1.63 13. Dense flint glass 1.65 14. Ruby 1.71 15. Sapphire 1.77 16. Diamond 2.42 You are given kerosene, turpentine and water. In which of these does the light travel fastest? Use the information given in Table 9.3.
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No.Material Medium Refractive Index 1. Air 1.0003 2. Ice 1.31 3. Water 1.33 4. Alcohol 1.36 5. Kerosene 1.44 6. Fused quartz 1.46 7. Turpentine oil 1.47 8. Benzene 1.50 9. Crown glass 1.52 10. Canada Balsam 1.53 11. Rock salt 1.54 12. Carbon disulphide 1.63 13. Dense flint glass 1.65 14. Ruby 1.71 15. Sapphire 1.77 16. Diamond 2.42 Define 1 dioptre of power of a lens.
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