Advertisements
Advertisements
Question
Fill in the blank with suitable word :
An echo is simply a ................... sound.
Advertisements
Solution
An echo is simply a reflected sound.
APPEARS IN
RELATED QUESTIONS
What is meant by an echo?
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 ?
An echo-sounder in a trawler (fishing boat) receives an echo from a shoal of fish 0.4 s after it was sent. If the speed of sound in water is 1500 m/s, how deep is the shoal ?
Answer the following question in your own words.
What is an echo?
What is an echo?
When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.
______ allows bats to navigate through dark caves and find insects for food.
______ 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?
