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Light does not need a for propagation ....

Light does not need a _________ for propagation .

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SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Fill in the blanks (Covers whole unit))
  1. Light travels along a line.

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  2. 1D is the power of a lens whole focal length is .

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  3. Light does not need a for propagation .

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  4. The speed of light in vaccum is ms^(-1).

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  5. The velocity of light is given by .

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  6. Among visible light, has the lowest wavelength.

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  7. When a ray of light travels from one transparent medium into another o...

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  8. The deviation of a ray of light is called .

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  9. The velocity of light is more in medium.

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  10. The second law of refraction is also known as .

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  11. The speed of light is low, if the of the medium is high.

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  12. The velocity of light is less in medium.

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  13. When light travels from rarer to denser medium, the refracted ray is ...

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  14. is the fundamental and natural source of light.

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  15. is an example of a composite source.

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  16. The angle of refraction is determined in terms of the of the medium.

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  17. The source of light produces a light of single colour, it is known as...

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  18. light is a composite light which consists of light of various colours ...

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  19. If the energy of incident beam and the scattered beam are same, then ...

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  20. The and of the scatterer results in different types of scattering.

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