Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
51 views
in Physics by (90.2k points)
closed by
A sound absorber attenuates the sound level by `20 dB`. The intensity decreases by a factor of
A. 1000
B. 10000
C. 10
D. 100

1 Answer

0 votes
by (85.5k points)
selected by
 
Best answer
Correct Answer - D
`beta_(1)=10 log .(I_(t))/(I_(0))` `beta_(2)=10 log .(I_(2))/(I_(0))`
`beta_(1)-beta_(2)=10 log.(I_(1))/(I_(2))=20`
`log. (I_(1))/(I_(2))=2`
`rArr (I_(1))/(I_(2))=100`

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...