1. Class 9
  2. Chapter 12 Class 9 - Sound
  3. NCERT Questions

NCERT Question 12 - Chapter 12 Class 9 - Sound

Last updated at June 26, 2019 by

Give two practical applications of reflection of sound waves.

Answer 

Application of reflection of sound waves

 

  • Ceilings of Cinema halls are Curved

 

This is to ensure that sound after reflection reaches all parts of hall

 

  • Stethoscope

 

It is used by doctors to measure heartbeat 

Doctor is able to hear sound due to multiple reflection of sound in stethoscope

  1. Class 9
  2. Chapter 12 Class 9 - Sound

    3. NCERT Questions

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Class 9
Chapter 12 Class 9 - Sound

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CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.