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What is refraction of light?...

What is refraction of light?

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PUNJAB BOARD PREVIOUS YEAR PAPERS-Refraction of Light and Lenses-EXERCISE
  1. Define refractive index?

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  2. State Snell's law of refraction of light.

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  3. What is refraction of light?

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  4. A convex lens made of a material of refractive index mu1 , is kept in ...

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  5. A convex lens made of a material of refractive index 'mu1' is kept in ...

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  6. A convex lens made of a material of refractive index mu1 is kept ih a...

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  7. Define critical angle for total internal reflection.

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  8. Define critical angle for total internal reflection.

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  9. State Snell's law of refraction of light.

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  10. Name the type of lens whichalways produces virtual and erect image.

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  11. What is total internal reflection, state the necessary conditions for ...

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  12. Write the conditions for total internal reflection to takeplace?

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  13. Prove the Relation : "^amub =1/("^bmua)

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  14. How will you explain twinkling of stars?

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  15. State Snell's law of refraction of light.

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  16. When does Snell’s law in refraction fail ?

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  17. Explain the phenomenon of refraction at a plane surface seperating two...

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  18. The sun appears before the sun rise and after sun set for few minutes,...

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  19. A concave mirror andaconvex lens are held in water. What changes if an...

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  20. To a fish under water, the man appears as tall or small standing at th...

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