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प्रश्न
In the following diagram, the correctly marked angles are
(A) All
(B) Only ∠i and ∠A
(C) ∠i, ∠r and ∠A
(D) ∠i, ∠A and ∠D
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उत्तर
Angle i by conventions represents the angle of incidence which is formed between the incident ray and the normal. From the given figure it is clear that angle i is correctly marked.
Angle r by convention represents angle of refraction which is formed between the refracted ray and the normal. From the given figure it is clear that angle r is correctly marked.
Angle e by convention represents angle of emergent which is formed between the emergent ray and the normal. But in the given figure it is shown between the emergent ray and the incident ray. Therefore, it is incorrectly marked.
Angle D by conventions represents the angle of deviation which is formed between the emergent ray and the incident ray. But in the given figure it is shown between the emergent ray and the normal. Therefore, it is incorrectly marked.
Angle A represents angle of prism and it is correctly marked.
Hence, the correct answer is option (C).
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संबंधित प्रश्न
Draw a ray diagram to explain the term angle of deviation.
Study the following ray diagram:
In this diagram, the angle of incidence, the angle of emergence and the angle of deviation respectively have been represented by
(A) y, p, z
(B) x, q, z
(C) p, y, z
(D) p, z, y
When a beam of white light is passed through a prism, it splits to form lights of seven colours. Is it possible to recombine the lights of seven colours to obtain the white light again? Explain your answer.
What acts as tiny prisms in the formation of a rainbow?
The property of splitting of white light into its seven constituent colours is known as
In figure AO is the ray of white light falling on a prism PQR. Complete the diagram till the light emerges out from the prism and falls on the screen.
Explain briefly, with the help of a neat labelled diagram, how white light gets dispersed by a prism. On which surface of a prism, there is both dispersion and deviation of light, and on which surface of the prism, there is only deviation of light ?
What conclusion do you draw about the nature of white light in part (b)?
If white light is used in same way what change is expected in the emergent beam?
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
