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प्रश्न
Draw a neat and labelled diagram for dispersion of light.
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उत्तर
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संबंधित प्रश्न
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.
Why do the component colours of incident white light split into a spectrum while passing through a glass prism, explain
Define the term dispersion of white light.
Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.
How could you show that the colours of the spectrum combine to give white light?
Which is refracted most by a prism : red light or violet light? Explain why?
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.
Name the process which is involved in the formation of a rainbow.
Which is optically denser: water or air? Give reason
What conclusion do you draw about the nature of white light in part (b)?
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
Write the range of wavelength of the ultraviolet spectrum.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
The process of separation of light into its component colours while passing through a medium is called _______.
The splitting of white light in to seven colors is called ______.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
Curved mirrors have surfaces that are spherical, cylindrical, parabolic, and ellipsoid.
Assertion: We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight.
Reason: The rainbow is formed due to the dispersion of light.
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’.
