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प्रश्न
Name the process which is involved in the formation of a rainbow.
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उत्तर
The dispersion of sunlight is the process that is involved in the formation of a rainbow.
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संबंधित प्रश्न
Describe an activity to show that colours of white light splitted by a glass prism can be recombined to get white light by another identical glass prism. Also draw ray diagram to show the recombination of the spectrum of white light.
State the cause of dispersion of white light passing through a glass prism. How did Newton show that white light of sun contains seven colours using two identical glass prisms. Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism.
Draw a ray diagram to show the dispersion of white light.
As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?
Which is refracted most by a prism : red light or violet light? Explain why?
The splitting up of white light into seven colours on passing through a glass prism is called:
(a) refraction
(b) deflection
(c) dispersion
(d) scattering
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 ?
When a white light ray falls on a prism, the ray at its first surface suffers ______.
Complete the ray diagram given below to show the nature of light produced on the screen.
The completed ray diagram is as shown below:
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
Observe the given figure and write appropriate phenomenon of light in the box.
The splitting of white light in to seven colors is called ______.
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
In dispersion, the color of light that will bend more is ______.
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Instead of sunlight, a green-coloured ray is passed through a glass prism. What will be the colour of the emergent ray?
