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PUNJAB BOARD PREVIOUS YEAR PAPERS-Refraction of Light and Lenses-EXERCISE
- Prove the Relation : "^amub =1/("^bmua)
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- How will you explain twinkling of stars?
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- State Snell's law of refraction of light.
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- When does Snell’s law in refraction fail ?
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- Explain the phenomenon of refraction at a plane surface seperating two...
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- The sun appears before the sun rise and after sun set for few minutes,...
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- A concave mirror andaconvex lens are held in water. What changes if an...
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- To a fish under water, the man appears as tall or small standing at th...
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- What is total internal reflection of light ? What are essential condit...
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- What is total internal reflection, state the necessary conditions for ...
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- What is total internal reflection, state the necessary conditions for ...
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- Write the conditions for total internal reflection to takeplace?
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- The sun is seen a little before it rises and for a short while after i...
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- What are optical fibres ? Give their one use
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- Derive the relation between refractive index of the medium and critica...
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- What are optical fibres ? Explain with the help of diagram on what pri...
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- Write the conditions for total internal reflection to takeplace?
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- What is total internal reflection of light ? What are the two essentia...
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- Write the conditions for total internal reflection to takeplace?
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- Derive the relation:- frac(mu2)(v) - frac(mu1)(u) = frac(mu2 - mu1) (R...
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