In Stethoscope, the sound of the patient's heartbeat reaches the doctor's ears by :

What is the name of the part of the ear that collects sound waves?

Which of the following is not a musical instrument that produces sound by vibrating a string?

What is the unit of measurement for sound intensity?

The property of the sound waves that determines the pitch of the sound is its

Which one of the following statements is true for sound waves propagating in air?