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With a neat labelled diagram, explain advanced sunrise and delayed sunset.

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CBSE COMPLEMENTARY MATERIAL-ELECTROMAGNETIC WAVES AND OPTICS-SHORT ANSWER QUESTION 2 MARKS
  1. If a jogger runs with constant speed towards a vehicle, how fast does ...

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  2. If the angle between the pass axis of polariser and analyser is 45^(@)...

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  3. When does (i) a plane mirror and (ii) a convex mirror produce real ima...

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  4. A virtual cannot be caought on a screen, Yet when we see a virtual ima...

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  5. With a neat labelled diagram, explain advanced sunrise and delayed sun...

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  6. The image of a small electric bulb fixed on the wall of a room is to b...

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  7. The angle subtended at the eye by an object is equal to the angle subt...

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  8. Two independent light sources cannot act as coherent sources. Why?

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  9. How is a wave front different from a ray? Draw the geometrical shape o...

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  10. What two main changes in diffraction pattern of a single slit will you...

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  11. You are provided with four convex lenses of focal length 1cm, 3cm, 10 ...

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  12. Give reasons for the following Sun looks reddish at sunset

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  13. Why do clouds generally look white ?

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  14. Using Huygens' principle for the wave theory of light, verify the law ...

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  15. Using Huygens' principle for the wave theory of light, verify the law ...

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  16. Water (refractive index µ) is poured into a concave mirror of radius o...

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  17. A point source S is placed midway between two converging mirrors havin...

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  18. A thin double convex lens of focal length f is broken into two equal h...

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  19. How much water should be filled in a container of height 21 cm, so tha...

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  20. A ray PQ incident on the refracting face BA is refracted in the prism ...

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