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What is the shape of the wavefront in ea...

What is the shape of the wavefront in each of the following cases
Light overging from the point source

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AAKASH SERIES-RAY OPTICS-EXERCISE (VERY SHORT ANSWER QUESTIONS )
  1. When a plane wavefront of light is incident on the separating surface ...

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  2. What is the shape of the wavefront in each of the following cases Li...

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  3. What will happen to the image formed by a mirror if half of it is cove...

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  4. For a plane mirror what is the focal length? The magnification?

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  5. Can two plane mirrors inclined to each other ever form even number of ...

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  6. A ray of light is incident on a horizontal plane mirror at an angle of...

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  7. For sperical mirros graph plotted between - (1)/(V) and -(1)/(u)is .

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  8. Can a convex mirror form a real image! Explain.

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  9. A convex mirror of focal length f produced an image (1//n)^(th) of the...

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  10. What kind of mirror is used in a car to observe the traffic at the bac...

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  11. If an object far away from a convex mirror moves towards the mirror, t...

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  12. Figure shows two rays P and Q being reflected by a mirror and going as...

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  13. What do you mean by refraction? Give an example.

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  14. State the Snell's laws of refraction of light.

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  15. What is dispersion ?

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  16. Define refractive index and relative refractive index

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

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

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

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

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