Advertisements
Advertisements
प्रश्न
Which of the following device does not work on the multiple reflections of sound waves ?
विकल्प
stethoscope
hydrophone
soundboard
megaphone
Advertisements
उत्तर
Hydrophone does not work on the principle of multiple reflections.
(b) Hydrophones.
APPEARS IN
संबंधित प्रश्न
A man is standing at a distance of 12 m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.
Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.
Which of the following statement best describes frequency?
What is the other name of a loud-hailer ?
Fill in the blank with suitable word :
An echo is simply a ................... sound.
Why are the ceilings of concert halls made curved ? Draw a labelled diagram to illustrate your answer.
What is an echo ? How is echo formed ?
What is the minimum distance in air required from a sound reflecting surface to hear an echo (at 20°C) ?
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a furnished room
Answer the following question in your own words.
What factors are important to get a distinct echo?
