The sound produced by an object vibrating with high frequency is called ______________.
A) Shrill or high-pitched sound
B) Deep or low pitched sound
C) Heavy sound
D) Musical sound

Hint: The frequency of a sound wave determines the pitch of the sound. In day to day life the terms, the frequency of sound and the pitch of sound are often used interchangeably as they are closely related to each other.

Complete step-by-step answer:
The frequency of a sound wave depends on and is usually equal to the frequency of vibration of its source. The frequency of a sound wave and its pitch are closely related. The pitch depends directly upon the frequency of sound. The higher the frequency of the sound, the greater will be the pitch of the sound.
A high pitched sound is called a shrill sound while a low pitched sound is called a deep sound. Therefore, an object vibrating with high frequency produces a high frequency sound wave, that is, it produces a shrill or high pitched sound.

So, the correct answer is “Option A”.

Additional Information: Males usually have a deep or low pitched voice, whereas females have a shrill or high pitched voice. This is because of the shapes of their voice boxes.

Note: Students must not think that only a high pitched sound can be musical. In fact there are many instruments like the piano that are capable of producing a wide variety of sounds ranging from deep sounds with a low frequency and low pitch to shrill sounds with a high frequency and high pitch.