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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
Study the following diagrams in which the path of a ray of light passing through a glass prism as traced by four students P, Q, R and S is shown:
The student who has traced the path correctly is
(A) P
(B) Q
(C) R
(D) S
The path of a ray of light passing through a glass prism is shown below:
In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:
(A) O, Y, Z and N,
(B) P, Y, M and Z,
(C) O, X, M and Z,
(D) P, X, Z and N.
Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow
Out of the following, the colour of light having the maximum wavelength is:
(a) violet
(b) indigo
(c) green
(d) orange
The speed of light in air or vacuum is
An object is placed in front of a converging lens and in front of a diverging lens as in fig.
(a)Complete the ray diagram to obtain an image.
(b)Compare the nature of image formed by both the lenses in the above case.
Write the range of wavelength of the visible spectrum.
In the figure, a beam of light consisting of three colours blue, red, and yellow is incident on a prism and on a rectangular glass block respectively. Complete the diagram by drawings of the refracted and emergent rays.
Rainbow is a beautiful natural phenomenon. It is the combined effect of a natural three processes together produced by light. Write it into the circle.
State True or False:
"Wavelength of red light is close to 700 nm.”
