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प्रश्न
How does the angle of minimum deviation of a glass prism vary if the incident violet light is replaced by red light?
उत्तर
Hence relative refractive index between the prism and red light is less than the relative refractive index between the prism and violet light.
The angle of minimum deviation is directly proportional to the relative refractive index by the relation:-
δ = (μ−1)A (where A is the angle of the prism)
Therefore the angle of minimum deviation for red light is less than the violet.
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संबंधित प्रश्न
Describe an activity to show that the colours of white light splitted by a glass prism can be recombined to get white light by another identical glass prism. Also, draw a ray diagram to show the recombination of the spectrum of white light.
The angular dispersion produced by a prism ___________ .
By properly combining two prisms made of different materials, it is possible to
(a) have dispersion without average deviation
(b) have deviation without dispersion
(c) have both dispersion and average deviation
(d) have neither dispersion nor average deviation
Two prisms of identical geometrical shape are combined with their refracting angles oppositely directed. The materials of the prisms have refractive indices 1.52 and 1.62 for violet light. A violet ray is deviated by 1.0° when passes symmetrically through this combination. What is the angle of the prisms?
The refractive index of a material M1 changes by 0.014 and that of another material M2 changes by 0.024 as the colour of the light is changed from red to violet. Two thin prisms, one made of M1(A = 5.3°) and the other made of M2(A = 3.7°) are combined with their refracting angles oppositely directed. (a) Find the angular dispersion produced by the combination. (b) The prisms are now combined with their refracting angles similarly directed. Find the angular dispersion produced by the combination.
In a regular prism, what is the relation between angle of incidence and angle of emergence when it is in the minimum deviation position?
A narrow beam of monochromatic light, PQ, is incident normally on one face of an equiangular glass prism of refractive index 1.45. When the prism is immersed in a certain liquid, the ray makes a grazing emergence along the other face (See figure). Find the refractive index of this liquid. 
What is meant by the dispersive power of transparent material?
Prove that in case of a prism, i + e = A + δ, where the symbols have their usual meanings.
For any prism, obtain a relation between the angle of the prism (A), the angle of minimum deviation (δm) and the refractive index of its material (μ or n).
