One can be recognised by his voice alone due to the factor of

A. quality

B. amplitude

C. pitch

D. loudness

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The cell that can be recharged, after it has run down, by passing a direct current through it from a…
  2. Expansion of a rod when heated
  3. Less dew is formed on cloudy nights because
  4. When a charged rod is brought near a collection of small pith balls, the balls
  5. When temperature decreases, resistance of metals to flow of electricity
  6. The star nearest to the sun is
  7. Railway tracks are banked on curves so that
  8. We see the sun before it actually rises on the horizon. This is due to
  9. The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
  10. When the disturbed electrons of an exited atom transfer back into lower energy levels they emit energy…
  11. Compared to the atomic bomb, the destructive power of a hydrogen bomb is
  12. The completely dark portion of a shadow of an object is known as
  13. The radius of curvature of a spherical mirror is
  14. When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs…
  15. Air escaping rapidly from a narrow orifice in an inflated tyre feels cool because
  16. The transistor was invented by
  17. A pair of stars that revolve round each other is
  18. Photo-electric cells convert
  19. A stationary elevated object has
  20. The best estimates of the age of the earth comes from the studies of
  21. The distance between two bodies is halved. Now the force of attraction between them will be
  22. No current will flow between two charged bodies if they have the same
  23. When a bowler spins a ball, it changes its direction in the air. This is due to
  24. A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water…
  25. The orbit of Venus lies between those of
  26. The light from the star nearest to the sun reaches the earth in
  27. The presence of impurities
  28. Credit for starting Space Science Research in India goes to
  29. When a swing la drawn to a side Its potential energy In relation to the earth
  30. The resistance of a wire depends on