Class 7 Courses

Chapter 23: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 23

Sound Waves Multiple Choice Questions (MCQs) PDF Download - 13

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Sound Waves Questions & Answers PDF Download: MCQ Quiz 13

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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Sound Waves App (Android & iOS)

Sound Waves App (Android & iOS)

7th Grade Science App (Android & iOS)

7th Grade Science App (iOS & Android)

6th Grade Science App (Android & iOS)

6th Grade Science App (Android & iOS)

Earth Science App (Android & iOS)

Earth Science App (iOS & Android)