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प्रश्न
The coloured light having the maximum speed in glass prism is ______.
विकल्प
blue
green
violet
yellow
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उत्तर
The coloured light having the maximum speed in glass prism is yellow.
Explanation:
Yellow is the coloured light with the maximum speed in a glass prism as it has the greatest wavelength.
संबंधित प्रश्न
A student is observing a diagram showing the path of a ray of light passing through a glass prism. He would find that for all angles of incidence the ray of light bends:
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
Define the term dispersion of white light.
As light rays pass from air into a glass prism, are they refracted towards or away from the normal?
What will happen if another similar glass prism is placed upside down behind the first prism?
Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
The speed of light in air or vacuum is
How does the speed of light determine the optical density of a medium?
Explain the cause of dispersion of white light through a prism.
What do you understand by the term spectrum?
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
Complete the ray diagram given below to show the nature of light produced on the screen.
The completed ray diagram is as shown below:
An object AB is placed in front of a convex lens as shown in fig. 4. Complete the ray diagram and obtain the image formed and state the nature of the image.
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.
The wavelength range of white light is ______.
A wave has wavelength 50Å of State the speed in vacuum.
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
State two properties of ultraviolet radiation which differ from visible light.
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
Write an Explanation.
Critical angle
The splitting of white light in to seven colors is called ______.
The sunlight can be split into its constituent colors using ______.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
A ray of light is incident at 45° on an equilateral prism in the diagram below.
- Name the phenomenon exhibited by the ray of light when it enters and emerges out of the prism.
- State the cause of the above phenomenon mentioned by you.
