- Books Name
- Science Made Easy Science Book
- Science Made Easy
- CBSE Class 9
Applications of Reflection of Sound
(i) Megaphone, loudspeakers, bulb horns and trumpets, shehnai etc. are designed to send sound to
a particular direction without spreading all around.
→ All these instruments have funnel tube which reflects sound waves repeatedly towards audio
In this amplitude of sound waves adds up to increase loudness of sound.
(ii) Stethoscope: It is a medical instrument used for listening the sounds produced in human bo
mainly in heart and lungs. The sound of the heartbeats reaches the doctor’s ears by the multipe
reflection of the sound waves in the rubber tube of stethoscope.
(iii) Sound Board: In big halls or auditoriums sound is absorbed by walls, ceiling, seats etc. So a
curved board (sound board) is placed behind the speakers so that his speech can be heard ea
by audiences. The soundboard works on the multiple reflection of sound.
(iv) The ceiling of concert halls are made curved, so that sound after reflection from ceiling, rea
all the parts of the hall.