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When white light pass through transparen...

When white light pass through transparent medium, it is split into colours is called dispersion.

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TRUE or FALSE: The splitting of white light into its component colours is called dispersion.

When the light passes through glass prism, the __________ light deviates the least.

The splitting up of white light into colours is called __________.

Read the passage and answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. What is dispersion ?

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. Which light deviates the least and which one deviates the most ?

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. Write the colours of the Spectrum ?

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. How do emergent rays appear ?

SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (State whether the following statements are true or false. Correct the statement if it is false.)
  1. Light always travelss along curved line.

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  2. Material medium is needed for the propagation of light.

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  3. Different coloured light has same wavelength and frequency.

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  4. Incident ray and refracted ray lie in different plane.

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  5. The speed of light in a medium is low because of low refractive index ...

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  6. When white light pass through transparent medium, it is split into col...

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  7. Amount of scattering of light is directly proportional to fourth power...

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  8. In inelastic scattering, the energy of incident and scattering light a...

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  9. The amount of scattering is independent of wavelength in Rayleight sca...

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  10. In Raman Scattering , the scattered light contains the lines having fr...

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  11. The line joining the centre of curvature and the optic centre is pole.

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  12. When a ray strikes the pole or optic centre of the concave or convex l...

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  13. Concave lenses are used in camera lenses.

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  14. Concave lens is used to correct hypermetropia.

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  15. If magnification is greater than one diminished image will be obtained...

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  16. The unit of power of the lens is m.

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  17. Rayleigh's scattering is inelastic scattering.

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  18. The distance between optic centre and centre of curvature is called as...

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  19. Concave lens is used as 'Magnifying lens'.

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  20. The final image formed by the astronomical telescope is 'erect image'.

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