Class 10 Courses

Sound Notes App Download | Grade 10 Physics PDF eBook

Class 10 Physics MCQs: Chapter 9

Sound Notes Questions & Answers PDF Download - 4

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The Sound Notes Questions and Answers PDF (Sound Quiz Answers PDF eBook) download Ch. 9-4 to study Grade 10 Physics Course. Practice Echo of Sound MCQ PDF, Sound Quiz Questions and Answers for high school certification courses. The Sound Notes App Download: Free Grade 10 Physics Study [Free] App for echo of sound, importance of acoustics, audible range of human ear, speed of sound test prep for online school and college.

The Quiz: To communicate with each other, Elephants use "Sound" App APK Download with answers: low frequency light waves, low frequency sound waves, high frequency sound waves, and low frequency heat waves for high school certification courses. Practice Echo of Sound MCQ Questions, download Kindle eBook (Free Sample) for online school courses.

Sound Test Questions and Answers PDF Download: MCQ 4

MCQ: 16

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: 17

The technique or method to absorb undesirable sounds by soft and porous surface is called

  1. acoustic protection
  2. unacoustic protection
  3. audible protection
  4. decibel protection
MCQ: 18

A normal human ear can hear a sound only if its frequency lies between

  1. 30 Hz to 30,000 Hz
  2. 50 Hz to 50,000 Hz
  3. 20 Hz to 20,000 Hz
  4. 10 Hz to 10,000 Hz
MCQ: 19

The speed of sound in air is

  1. 343ms-1
  2. 343ms-2
  3. 341ms-1
  4. 250ms-1
MCQ: 20

The speed of sound can be found by relation

  1. v = cλ
  2. v = ma
  3. v = fλ
  4. f=1T

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Sound Notes App (iOS & Android)

Sound Notes App

Sound Notes App (Android & iOS)

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