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Term 1 Light Three Marks and Five Marks Questions

8th Standard EM

    Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 40
    5 x 3 = 15
  1. Define the refractive index of a medium.

  2. State the Snell’s law of refraction

  3. Tabulate the images formed by a convex mirror.

  4. Name the rays which involved in reflection of light.

  5. Why silver metal is used to make mirror?

  6. 5 x 5 = 25
  7. What is reflection? Write short notes on regular and irregular reflection?

  8. Explain the working of a periscope.

  9. What is dispersion? Explain in detail.

  10. What are the uses of convex mirrors?

  11. Write a note on refraction in medium and list out the refractive index of some substances.

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