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Question
Explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vacuum.
Solution
The absolute refractive index is the value of refractive index of a medium with respect to the vacuum.
`mu_B=c/v`
where
c = Speed of light in vacuum
v = Speed of light in medium B
Here, `mu_B` is the absolute refractive index of medium B.
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RELATED QUESTIONS
State the dependence of angle of deviation On the refractive index of the material of the prism.
After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below:
|
S. No. |
∠i |
∠i |
∠e |
|
I |
30° |
20° |
31° |
|
II |
40° |
25° |
40° |
|
III |
50° |
31° |
49° |
The correct observations are:
(A) I and II
(B) II and III
(C) I and III
(D) I, II and III
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