Advertisements
Advertisements
प्रश्न
Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
Advertisements
उत्तर
On the basis of loudness, sound is classified into two types:
Soft sound: It has smaller amplitude and thus this type of sound has lesser loudness.
Loud sound: It has higher amplitude and thus this type of sound has greater loudness.
संबंधित प्रश्न
A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is 1531 m/s, how far away is the cliff?
Explain how bats use ultrasound to catch a prey.
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
What name is given to sound waves of frequencies higher than 20 kHz ?
Explain how, flaws (or defects) in a metal block can be detected by using ultrasound.
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
Name an animal which navigates and finds food by ecolocation.
In SONAR we use:
Fill in the blank and explain.
To discover a sunken ship or objects deep inside the sea, ______ technology is used.
Explain how does SONAR work?
