Vibrations generated by earthquakes produce ultrasonic sound.

What are ultrasonics?

Human beings can hear ultrasonic sound.

Snake produces hissing sound through

What are ultrasonics ? Can you hear the ultrasonic sound ?

If vibrations are of irregular patterns, an unpleasant sound is produced

The speed of sound in water is 1600 m/s. A boat man hears an echo 3 s after sending an ultrasonic sound into the sea. What is the depth of the sea?

The second heart sound is produced

How do we produce sound ?

Name the organ which produces sound.

Mutation generally produces