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Write any one advantage of light emiting...

Write any one advantage of light emiting diode.

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The LED can be operated at a very low DC voltage. The switch on time is very low and efficiency is very high.
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SUBHASH PUBLICATION-SUPPLEMENTARY EXAMINATION QUESTION PAPER JULY 2017-QUESTION
  1. Define half life of a radiocative sample.

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  2. Give the circuit symbol of AND-gate.

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  3. Write any one advantage of light emiting diode.

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  4. What is attenuation in communication system ?

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  5. State and explain Gauss's theorem in Electrostatics.

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  6. Define mobility. Mention its S.I. Unit

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  7. What is ohmic device? Give one example.

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  8. Write any two differences between diamagnetic and paramaganetic substa...

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  9. The magnetic flux linked with a coil varies as phi=3t^(2)+4t+9. Find t...

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  10. Write Maxwell's equation for the speed of electromagnetic waves and ex...

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  11. What are de-Brogli Waves ? How does the de-Broglie wavelength vary wit...

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  12. Draw the block diagram of generalised communication system.

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  13. Obtain the relation between electric field and electric potential due ...

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  14. Derive the relation vec(j)=sigmavec(E) with terms which has usual mean...

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  15. How can a moving coil galvanometer be converted into a voltmeter? Expl...

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  16. Mention any three application of eddy currents.

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  17. Define critical angle. Write two conditions for total internal reflect...

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  18. Write any three difference between interference and diffraction.

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  19. Define the terms : Threshold frequency

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  20. Define the terms : Work function.

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