Class 7 Science MCQs App | Sound Waves MCQs e-Book PDF

Class 7 Science MCQs (Grade 7) From Textbook

Class 7 Science Competitive Exam MCQs – Practice Test 13 (Chapter 23)

Sound Waves MCQs with Answers PDF Download – Test 13

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Sound Waves MCQs – Practice Test 13 PDF Download

MCQ 61: One example of string instrument is:

  1. piano
  2. drum
  3. saxophone
  4. trombone

MCQ 62: The speed of sound in glass is:

  1. 2000 m/s
  2. 6000 m/s
  3. 10000 m/s
  4. 14000 m/s

MCQ 63: The microphone changes the sound waves into:

  1. mechanical signals
  2. electrical signals
  3. light signals
  4. wave signals

MCQ 64: Sounds are chiefly produced by:

  1. friction
  2. energy
  3. vibration
  4. disturbance

MCQ 65: The distance between two points of a wave in a phase is known as:

  1. wave front
  2. frequency
  3. amplitude
  4. wavelength

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