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

Prove the Relation : `"^amu_b` =`1/("^bmu_a)`

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PUNJAB BOARD PREVIOUS YEAR PAPERS-Refraction of Light and Lenses-EXERCISE
  1. What is total internal reflection, state the necessary conditions for ...

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

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

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  4. How will you explain twinkling of stars?

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

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

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

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

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

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

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  11. What is total internal reflection of light ? What are essential condit...

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

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

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

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  15. The sun is seen a little before it rises and for a short while after i...

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  16. What are optical fibres ? Give their one use

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  17. Derive the relation between refractive index of the medium and critica...

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  18. What are optical fibres ? Explain with the help of diagram on what pri...

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

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  20. What is total internal reflection of light ? What are the two essentia...

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