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प्रश्न
How does the deviation produced by a prism depend on the refraction index of its material.
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उत्तर
Dependence of prism deviation on material refractive index: At a given incidence angle, a prism with a higher refractive index produces a larger deviation than one with a lower index.
Example: Compared to a crown glass prism with the same refractive angle, a flint glass prism exhibits greater variation.
Since µflint > µcrown
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संबंधित प्रश्न
Choose the correct alternative and rewrite the following sentence.
A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation
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
Rahim recorded the following sets of observations while tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence.
|
S. No. |
Angle of incidence |
Angle of refraction |
Angle of emergence |
|
I |
45° |
41° |
45° |
|
II |
40° |
38° |
38° |
|
III |
45° |
41° |
40° |
|
IV |
41° |
45° |
41° |
The correct observation is recorded at serial number:
(1) I
(2) II
(3) III
(4) IV
Observe the figure and write accurate conclusion regarding refraction of light.
Draw a diagram to show the splitting of white light into its constituent colours.
Which colour of light travels fastest in any medium except air?
What should be the ratio of the speed of light through the liquid to the speed through the glass so that there is no refraction of light at the boundaries of the glass block when the system is illuminated by the light of one colour?
Draw ray of light bending towards the normal while passing from glass to water. Label your diagrams.
Draw a diagram of a prism and label:
(i) the base,
(ii) the refracting surfaces,
(iii) the refracting edge,
(iv) the refracting angle in it.
