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".

You can do it
  1. The device used to record the sound is
  2. Gamma radiations are used for
  3. The loudness of a sound is determined by
  4. The characteristics of a musical note are
  5. The speed of light is minimum while passing through
  6. Mercury is used in a barometer because
  7. When the velocity of a body is halved
  8. When the earth reaches its perihelion
  9. A cyclist leans inwards when he is negotiating a curve 10 that
  10. An electric charge is measured in
  11. Acoustics is a property or
  12. In a refrigerator, the refrigerant is
  13. Metals are good conductors of heat because
  14. In a river, the currents are fastest where the river la
  15. Which of the following pairs is not correct?
  16. Solids have definite shapes. This is because
  17. The SI unit of electric current is
  18. The instrument used to measure the strength of electric current at a point is
  19. Of the following types of electromagnetic radiation which has the longest wavelength?
  20. The pressure of air at high altitude is less than the atmospheric pressure at the sea level. Hence the…
  21. Air escaping rapidly from a narrow orifice in an inflated tyre feels cool because
  22. In an electrical circuit, a fuse is connected
  23. On applying a constant force to a mass, It moves with a uniform
  24. The power of a lens is
  25. A projectile is fired at an angle with the horizontal with a small velocity. Its horizontal range will…
  26. The number of electrons in the outer orbits of a nucleus gives
  27. A pair of stars that revolve round each other is
  28. If a man wants to hear clearly the echo of a sound produced by him from a hill, the hill should be away…
  29. The Space Application Centre for training in Satellite Communication Technology is located at
  30. No current will flow between two charged bodies if they have the same