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Choose the correct answer

A. Microphone converts sound energy into electrical energy.

B. Electric fan converts electrical energy into mechanical energy.

C. Battery converts chemical energy into electrical energy.

D. All the above

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

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  1. On the Kelvin scale, the melting point of ice is
  2. Of the following types of electromagnetic radiation which has the longest wavelength?
  3. Which metal is used in storage batteries?
  4. Less dew is formed on cloudy nights because
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  6. Choose the scalar quantity from the following physical quantities
  7. A light year means
  8. Hot water is poured simultaneously in four metallic tumblers painted outside with different paints.…
  9. Which of the following can produce electricity?
  10. A temperature below absolute zero for an ideal gas
  11. Which of the following revolves round the nucleus in an atom?
  12. Commonly used safety fuse wire is made of
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  15. The Cact that the compass needle does not point true north was observed first by
  16. The shadow below a tree has bright spots in it because
  17. The rate of cooling of a hot body depends on
  18. Formation of shadows can be explained by
  19. The planet with the reddish tinge is
  20. Which of the following is known as freon?
  21. If you want to open a door with les difficulty you push it
  22. Increase in pressure
  23. Warm air will hold more water vapour than cold air because
  24. Holography is the technique of
  25. Water kept in an earthen pot is less cool on rainy days than in summer because during the rainy days
  26. A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because
  27. The speed of light is minimum while passing through
  28. The barometer was invented by
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  30. The planet that moves fastest around the sun is