Advertisements
Advertisements
Question
Name the waves used for sound ranging. State one reason for their use.
Advertisements
Solution
Ultrasonic waves are utilized for sound ranging because they are able to travel a great distance without deviating, are difficult to absorb in a medium, and can be focused into a tight beam.
APPEARS IN
RELATED QUESTIONS
What are ultrasonics? Can you hear the ultrasonic sound?
Which wave property determines loudness?
A cannon is fired at A (see diagram). An observer at B hears two sounds. The first sound is heard after 1 second and the second 3s after the observer sees the flash. (Velocity of sound = 340 ms−1)
(i) Why does the observer see the flash before he hears the sound?
(ii) Calculate the distance x between the observer and the wall.
Select the correct option:
Which of the following is an elastic wave?
The smoke from the gun barrel is seen 2 second before the explosion is heard. If the speed of sound in air is 350 ms-1, calculate the distance of observer from the gun.
Name the Sound of the Frequency Given Below:
200 Hz
A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through ______.
Waves created by Earth Quake are Infrasonic.
Explain the types of mechanical waves.
