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प्रश्न
Using the curve, how do you infer that for given prism, the angle of minimum deviation δmin is unique for the given light?
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उत्तर
In the position of minimum deviation δ = δmin,
i1 = i2 = i (say)
Where i1 is angle of incidence and i2 is angle of emergence.
Then δmin = 2i - A
For given prism and given colour of light, δmin is unique.
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संबंधित प्रश्न
What is a spectrum?
A student traces the path of a ray of light passing through a rectangular glass slab and marks the angle of incidence i, angle of refraction r and angle of emergence e, as shown.
The correctly marked angle(s) is/are
(A) ∠ i only
(B) ∠ e only
(C) ∠ r only
(D) ∠ i and ∠ e
Why do we get a spectrum of seven colors when white light is dispersed by a prism?
For which colour of white light, is the refractive index of a transparent medium the most?
Trace the path of a ray of light incident at an angle of 45° on a rectangular glass slab. Write the measure of the angle of refraction, the angle of emergence and the lateral displacement suffered by the ray as it passes through the slab.
Which of the following is the best experimental set-up out of the four shown for tracing the path of a ray of light passing through a rectangular glass slab ?
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
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(a) Does the light speed up or slow down in the glass,
(b) Give the reason for your answer.
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