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What advantages has optical fibre commun...

What advantages has optical fibre communication over cable communication?

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The advantages of using optical fibres in communications are :-
(a) large bandwidth of operation,
(b) high efficiency, no noise or interference of signals,
(c) high speed operation, and
(d) multi signal transmission at reduced cost.
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SUBHASH PUBLICATION-RAY OPTICS AND OPTICAL INSTRUMENTS-TWO MARKS QUESTIONS WITH ANSWERS
  1. Write the expression for R.I. of the material of the prism for symmetr...

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  2. Write the expression for the power of a lens in terms of powers of its...

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  3. Write the formula for the equivalent focal length of two thin lenses s...

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  4. How can the power of the combination expressed, if two lenses are equi...

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  5. Two lenses having focal lengths +0.20 m and -0.30 m are separated by a...

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  6. An extended object is placed at the principal focus of a lens. Where w...

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  7. State Snell's law of refraction of light?

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  8. Write Snell's law in general mathematical terms.

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  9. Define the term angle of deviation.

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  10. A riding glass though formed by spherical surfaces has zero power. Giv...

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  11. What advantages has optical fibre communication over cable communicati...

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  12. Draw a neat labelled diagram of a compound microscope and give the exp...

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  13. Give any three differences between a compound microscope and a telesco...

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  14. Draw a neat labelled diagram of image formed in a refracting telescope...

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  15. Show that n=(1)/(sinC) where symbols have their usual notation.

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  16. Mention the three factors affecting lateral shift.

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  17. State the conditions for dispersion without deviation.

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  18. Show that m=(f-v)/(f) for a lens.

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  19. Show that m=(f)/(u+f) for a lens.

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  20. On what factors does the focal length of a lens depend?

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