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प्रश्न
Light of different colours is deviated through different angles by a prism. Explain the reason.
Different colours of light are deviated through different angles by a glass prism. Explain the reason.
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उत्तर
The angle of deviation produced by a prism depends on the refractive index of the material of the prism. The refractive index of the material of the prism is different for different colours of light because the speed of different colours is different inside the prism. Thus, the light of different colours is deviated through different angles by a prism.
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संबंधित प्रश्न
Name three factors on which the deviation produced by a prism depends and state how does it depend on the factors stated by you.
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In following diagram shows a thin beam of white light from a source S striking on one face of a prism.

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Name the radiation of a wavelength longer than 8 × 10−7 m.
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Comment on the statement: ‘When any ray of white light is incident on a glass prism, it simply disperses it into its seven constituent colours.
Which colour of white light travels slowest, in glass?
Write the approximate wavelength for red light.
The wavelengths for the light of red and blue colours are nearly 7·8 × 10-7 m and 4·8 × 10-7 m respectively.
Which colour has greater speed in glass?
