Advertisements
Advertisements
प्रश्न
Fill in the blank with suitable word :
An echo is simply a ................... sound.
Advertisements
उत्तर
An echo is simply a reflected sound.
APPEARS IN
संबंधित प्रश्न
When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
The minimum distance between the source and the reflector in air. So that an echo is heard is approximately equal to ______.
Which property of sound leads of the formation of echoes ?
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 bare room
Which of the following device does not work on the multiple reflections of sound waves ?
Answer the following question in your own words.
What should be the dimensions and the shape of classrooms so that no echo can be produced there?
How can you calculate the speed of sound using echo?
______ is an image obtained by the use of reflected ultrasonic waves.
Numerical problems:
An echo returned in 3s. What is the distance of the reflecting surface from the source given that the speed of sound is 330 ms-1?
