Echo of Sound MCQs & Quiz Online PDF Book Download

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Learn physics MCQs: to communicate with each other, elephants use, with choices low frequency sound waves, low frequency light waves, high frequency sound waves, and low frequency heat waves for online school degrees. Free physics student portal for online learning echo of sound quiz questions, MCQs to find questions answers based online learning tests.

MCQ on Echo of Sound PDF Book Download

MCQ: To communicate with each other, Elephants use

  1. low frequency sound waves
  2. low frequency light waves
  3. high frequency sound waves
  4. low frequency heat waves


MCQ: When sound is incident on surface of a medium it bounces back into first medium. phenomenon is called

  1. refraction of sound
  2. deflection of sound
  3. defraction of sound
  4. reflection of sound


MCQ: Total distance covered by sound from point of generation to reflecting surface and back should be at least

  1. 30 m
  2. 34 m
  3. 40 m
  4. 38 m


MCQ: For hearing distinct echoes, minimum distance of obstacle from source of sound must be

  1. double to this distance
  2. equal to this distance
  3. half of this distance
  4. one third to this distance


MCQ: Echoes may be heard more than once due to successive or multiple reflections

  1. deflections
  2. defractions
  3. refractions
  4. reflections