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प्रश्न
Define the term absolute refractive index. The absolute refractive index of diamond is 2.42. What is the meaning of this statement? Refractive indices of media A, B C and D are given below:
|
Media |
Refractive index |
|
A |
1.33 |
|
B |
1.44 |
|
C |
1.52 |
|
D |
1.65 |
In which of these four media is the speed of light (i) minimum and (ii) maximum ?
Find the refractive index of medium C with respect to medium B.
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उत्तर
Absolute refractive index: The refractive index of any medium with respect to the vacuum is called absolute refractive index of that medium.
The absolute refractive index of diamond is 2.42. This means the speed of light in diamond is 2.42 times slower than that in the vacuum.
`n=c/v=2.42`
Absolute refractive index: The refractive index of any medium with respect to the vacuum is called absolute refractive index of that medium.
The absolute refractive index of diamond is 2.42. This means the speed of light in diamond is 2.42 times slower than that in the vacuum.
`n_C/n_B=1.52/1.44=1.055-1.06`
