Question

A high pitch sound is called a ---- sound.
A. Hoarse
B. Loudness
C. Shrill
D. Timbre

Answer 1

Hint: Pitch it depends upon frequency of vibration for example if frequency of vibration is higher the pitch of sound is higher and sound will be shrill and if the frequency of vibration is lower than pitch of sound also gets low.

Complete solution:
As we know that when the frequency of vibration is higher its pitch also gets high and frequency of vibration gets lower its pitch or pitch of the sound also gets lower.
Now when the pitch of sound gets higher the sound will be shrill or we can say sharp.

So the correct option will be option (C).

Additional information:
Types of waves:
Transverse wave:
In this wave the medium moves at the right angles to the direction of the wave.
Longitudinal wave:
A longitudinal wave has the movement of the particle in the medium and in the same dimension as the direction of the movement of the wave.
Sound waves are one example of longitudinal waves.
Electromagnetic wave:
Electromagnetic waves or EM waves are waves that are created as a result of vibration between an electric field and magnetic field. X – Rays, light rays, cosmic rays and radio signals are common examples of EM waves.

Note:
In this question we can get the mistake between the loudness and shrill but both are different. The reason behind that is loudness of the sound depends upon amplitude of the sound when the amplitude increases loudness of sound also increases and when amplitude decreases loudness of sound also decreases.