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Class 12
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Physics
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Ray Optics and Optical Instruments
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Dispersion
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Rainbow and Scattering
Rainbow and Scattering
16 Mins
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REVISE WITH CONCEPTS
Formation of Rainbow
Example
Definitions
Formulaes
>
Scattering of Light and Tyndall Effect
Example
Definitions
Formulaes
>
Colours of the Rainbow are due to Dispersion
Example
Definitions
Formulaes
>
QUICK SUMMARY WITH STORIES
Rainbow
3 mins
Scattering of Light and Tyndall Effect
3 mins
Important Questions
What is a rainbow? Draw a labelled diagram to show the formation of a rainbow.
Medium
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(a) Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
1. incident ray
2. emergent ray, and
3. angle of deviation.
(b) What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
(c) What acts as tiny prisms in the formation of a rainbow?
(d) Name the process which is involved in the formation of a rainbow.
(e) What are the seven colours seen in a rainbow?
Hard
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Draw a labeled diagram of rainbow formation. Also, explain the phenomenon of rainbow
formation.
Medium
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Which of the following phenomena of light are involved in the formation of a rainbow?
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Why do we see a rainbow in the sky only after rainfall?
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Which of the following statements is correct regarding the propagation of light of different colors of white light in air?
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Explain how the formation of rainbow occurs.
Easy
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How is a rainbow formed?
Easy
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Rainbow is formed due to:
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Which of the following are conditions necessary for observing rainbow?
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