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Question
Draw a labelled diagram: Dispersion of light through a prism.
Solution
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RELATED QUESTIONS
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
After tracing the path of a ray of light through a glass prism a student marked the angle of incidence (∠i), angle of refraction (∠r) angle of emergence (∠e) and the angle of deviation (∠D) as shown in the diagram. The correctly marked angles are :
(A) ∠i and ∠r
(B) ∠i and ∠e
(C) ∠i, ∠e and ∠D
(D) ∠i, ∠r and ∠e
What are the seven colours seen in a rainbow?
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
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.
A ray of white light is passed through a glass prism and a spectrum is obtained on a screen.
- Name the seven colours of the spectrum in order.
- Do the colours have the same width in the spectrum?
- Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least?
Complete the ray diagram given below to show the nature of light produced on the screen.
When a white light ray falls on a prism, the ray at its first surface suffers ______.
In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of prism is ______.
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
When we place a glass prism in the path of a narrow beam of white light a spectrum is obtained. What happens when a second identical prism is placed in an inverted position with respect to the first prism? Draw a labelled ray diagram to illustrate it.
The wavelengths of violet and red light are 4000 Å and 8000 Å respectively. Which of the two has the higher frequency?
A wave has wavelength 50Å of name the wave.
A wave has wavelength 50Å of State the speed in vacuum.
Answer the following question:
Differentiate between a glass slab and a glass prism. What happens when a narrow beam of
(i) a monochromatic light, and
(ii) white light passes through
(a) glass slab and
(b) glass prism?
Distinguish between an impure spectrum and a pure spectrum.
Write the range of wavelength of the visible spectrum.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
A prism of refractive index `sqrt2` and refracting angle A produces minimum deviation δm of a ray on one face at an angle of incidence 45°, The values of A and δm are, respectively ______.
Observe the given diagram and answer the questions:
- Name the process shown in the figure.
- Name the colour that deviates the most.
- Name the colour that deviates the least.
- Name any one phenomenon in nature which is based on the above process.
- Define ‘spectrum’.
