Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Solve this problem How many times more intense is a 60dB sound than a 30dB sound

How many times more intense is a 60dB sound than a 30dB sound

  • Option 1)

    100

  • Option 2)

    4

  • Option 3)

    1000

  • Option 4)

    2

 

Answers (1)

best_answer

10 log x = a dB ; \therefore x = a/10 dB ;

10 log x = 30 dB ; \therefore log x = 3 dB ; \therefore x = 1000;

10 log y = 60 dB  ; log y = 6 dB \therefore y = 106

\therefore This sound 60 db is 1000 times longer than 30 dB.

 

Sound level in decibels -

\beta = \: \: 10 \log_{10}\left ( I/I_{0} \right ),\\for \: \: I=I_{0}\\ \beta =0

- wherein

Where I is the intensity of the sound and I_{0}  is a constant reference intensity = 10-12 W/m2

 

 

 

 


Option 1)

100

This is incorrect.

Option 2)

4

This is incorrect.

Option 3)

1000

This is correct.

Option 4)

2

This is incorrect.

Posted by

Plabita

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2024 session 2 result date announced; Steps to check NTA session 2 scores
anam-khan

JEE Main 2024 session 2 final answer key soon at jeemain.nta.ac.in; result on April 25
anam-khan

JEE Main 2024 Session 2: Last day to challenge answer key today

Latest Question