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What is an optical fibre? State its prin...

What is an optical fibre? State its principle.

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AAKASH SERIES-RAY OPTICS-EXERCISE (VERY SHORT ANSWER QUESTIONS )
  1. Define bond energy. On what factors does it depend?

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  2. State the consequences of total internal reflection?

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  3. What is an optical fibre? State its principle.

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  4. Why do diamonds sparkle?

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  5. A ray of light while traveling from a denser to rarer medium grazes th...

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  6. If theta c in the critical angle, write the deviation value when the r...

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  7. Consider a ray of light passing from one medium to another. If the ang...

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  8. Mention any three uses of optical fibres.

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  9. It is possible for a lens to act as convergent in one medium and diver...

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  10. Can a single lens ever form a real and erect image?

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  11. If the two radii of a thin lens are not equal, will the focal length c...

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  12. What is the focal length if plane surface is silvered in previous illu...

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  13. What will be the equivalent focal length of a system consisting of a t...

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  14. An air bubble is formed inside water. Does it act as a converging lens...

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  15. As an object is moved from the surface of a thin converging lens to a ...

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  16. Define refracting angle and principal section of a prism

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  17. The graph between angle of deviation (delta) and angle of incidence (i...

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  18. Name the shape of wavefront after refraction of (1) Plane wavefront th...

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  19. What is angular dispersion? On what factors does it depend?

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  20. Can we have dispersion without deviation with a pair of prisms of the ...

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