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(a) Compare the speed of light of wavele...

(a) Compare the speed of light of wavelength 4000 Å (i.e., violet light) and 8000 Å (i.e. red light) in vacuum.
(b) How is the refractive index of a medium related to the speed of light in it and in vacuum or air ?

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The correct Answer is:
(a) `1:1`
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ICSE-REFRACTION OF LIGHT AT PLANE SURFACES-EXERCISE-4(A)
  1. State the Snell's laws of refraction of light.

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  2. Define the term refractive index of a medium. Can it be less than 1 ?

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  3. (a) Compare the speed of light of wavelength 4000 Å (i.e., violet ligh...

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  4. A light ray passes from water to (i) air, and (ii) glass. In each case...

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  5. A light ray in passing from water to a medium (a) speeds up, (b) slows...

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  6. What do you understand by the statement the refractive index of glass ...

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  7. A monochromatic ray of light passes from air to glass. The wavelength ...

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  8. A boy uses blue colour of light to find the refractive index of glass....

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  9. (a) For which colour of white light, is the refractive index of a tran...

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  10. Name two factors on which the refractive index of a medium depends ? S...

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  11. How does the refractive index of a medium depend on the wavelength of ...

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  12. How does the refractive index of a medium depend on its temperature ?

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  13. Light of a single colour is passed through a liquid having a piece of ...

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  14. In Figure, a ray of light A incident from air suffers partial reflecti...

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  15. The diagram alongside shows the refraction of a ray of light from air ...

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  16. The refractive index of water with respect to air is ""(a)mu(w) and of...

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  17. What is lateral displacement ? Draw a ray diagram showing the lateral ...

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  18. A ray of light strikes the surface of a rectangular glass slab such th...

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  19. In the adjacent diagram, AO is a ray of light incident on a rectangula...

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  20. A ray of green light enters a liquid from air, as shown in figure. Ang...

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