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प्रश्न
Write a relationship between the angle of incidence and angle of refractions for a given pair of media
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उत्तर
The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for a given pair of media called the refractive index
`(sin i)/(sin r) = mu`
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संबंधित प्रश्न
Which of the above wavelengths has a higher frequency?
When light travels from a rarer to a denser medium, its speed ______.
Select from the following the best set-up for tracing the path of a ray of light through a rectangular glass slab:
(A) I
(B) II
(C) III
(D) IV
While tracing the path of a ray of light passing through a rectangular glass slab a student tabulated his observations as given below:
|
S.NO. |
∠i |
∠r |
∠e |
|
I |
60° |
40° |
61° |
|
II |
50° |
36° |
51° |
|
III |
40° |
28° |
39° |
|
IV |
30° |
20° |
31° |
The correct observations is:
(A) I
(B) II
(C) III
(D) IV
-
- the angle of refraction and
- the angle of deviation for the ray?
Fig. shows a ray of white light that passes through a prism and produces a spectrum.
(a) Name the phenomenon that is taking place.
(b) What colour would you see at X and Y?
(c) What radiation would you detect above X and below Y?
Name two instruments of the total refracting prism in which is used.
In the diagram below, PQ is a ray of light incident on a rectangular glass block.
Copy the diagram and complete the path of the ray of light through the glass block. In your diagram, mark the angle of incidence by letter ‘i’ and the angle of emergence by the letter ‘e’.
Observe the figure and name the ray AB, ray CD, ray GH.
