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Define refractive index and relative ref...

Define refractive index and relative refractive index

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AAKASH SERIES-RAY OPTICS-EXERCISE (VERY SHORT ANSWER QUESTIONS )
  1. State the Snell's laws of refraction of light.

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  2. What is dispersion ?

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  3. Define refractive index and relative refractive index

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  4. Give the ratio of velocities of two light waves traveling in vacuum an...

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  5. For the same angle of incidence, the angles of refraction in three dif...

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  6. Can absolute refractive index of a medium be less than unity ?

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  7. Can absolute refractive index of a medium be less than unity ?

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  8. A beam of light is converging towards a point. A plane parallel plate ...

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  9. Explain why: (a) A flying bird appears higher in the sky than it reall...

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  10. What happens to the frequency, wavelength and speed of light that cros...

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  11. Suppose you are inside the water in a swimming pool near an edge. A fr...

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  12. Light enters from air to glass having refractive index 1.50. What is t...

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  13. Define bond energy. On what factors does it depend?

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  14. State the consequences of total internal reflection?

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  15. What is an optical fibre? State its principle.

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  16. Why do diamonds sparkle?

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  17. A ray of light while traveling from a denser to rarer medium grazes th...

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  18. If theta c in the critical angle, write the deviation value when the r...

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  19. Consider a ray of light passing from one medium to another. If the ang...

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  20. Mention any three uses of optical fibres.

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