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प्रश्न
Which of the following is not involved in formation of a rainbow?
पर्याय
refraction
angular dispersion
angular deviation
total internal reflection
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उत्तर
Angular deviation
Explanation:
A rainbow is created when raindrops that are suspended in the air scatter sunlight. We perceive a rainbow because of the way light refracts when it enters a raindrop, total internal reflection from the rear of the droplet surface, and further refracted out in the atmosphere. So all the given processes, i.e., total internal reflection, refraction, and dispersion, take place in the rainbow formation. Angular deviation of light doesn't occur in the formation of a rainbow.
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संबंधित प्रश्न
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b) List the phenomena which are observe in this process.
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Swarali found that the light ray travelling from the denser medium to rarer medium goes away from the normal. If the angle of incidence (i) is raised by Swarali, the angle of refraction (r) went on increasing. However, after certain value of the angle of incidence the light ray is seen to return back into the denser medium.
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- What is the process of reflection of incident rays into denser medium called?
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