The intensity of a sound gets reduced by 20% or passing through a slab. The reduction in intensity on passage through two consecutive slabs, is?
Asked by imtiyazmulla68
29th April 2018,
6:38 PM
Answered by Expert
Answer:
Let I be the initial intensity.
After passing one slab intensity reduced to 0.2I, hence absorption is 80%
then this reduced intensity 0.2I will be subjected to another 80% absorption when it is passing through another slab
Then remaining intensity 0.2I - 0.16I = 0.04I; 4% of initial inensity
Answered by Expert
29th April 2018,
7:16 PM
Rate this answer
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
You have rated this answer /10
Your answer has been posted successfully!
RELATED STUDY RESOURCES :
Browse free questions and answers by Chapters
- 1 Thermodynamics
- 2 Gravitation
- 3 Electromagnetic Waves
- 4 Communication Systems
- 5 Laws of Motion
- 6 Current Electricity
- 7 Work, Energy and Power
- 8 Kinematics
- 9 Physics and Measurement
- 10 Rotational Motion
- 11 Properties of Solids and Liquids
- 12 Kinetic Theory of Gases
- 13 Oscillations and Waves
- 14 Electrostatics
- 15 Magnetic Effects of Current and Magnetism
- 16 Electromagnetic Induction and Alternating Currents
- 17 Optics
- 18 Dual Nature of Matter and Radiation
- 19 Atoms and Nuclei
- 20 Electronic Devices
Trending Tags
Latest Questions
JEE Main Mathematics
Asked by amaladelsingh
28th October 2020,
10:24 PM
CBSE X Biology
Asked by reenacharan2008
28th October 2020,
9:11 PM
