Question

P is a particle in the path of sound waves progressing in the OX direction. When the fork is moved towards P, what change will occur in the amplitude of vibration of P?

Answer 1

In order to solve this you have to recall the concept of sound waves. Basically, sound waves are the waves that can travel through a medium like water or air and also they are longitudinal waves. Also remember that the loudness and pitch of the sound waves depends on the amplitude and frequency.

Complete step by step solution:
In the question it is given that the fork is moved toward P, and P is a particle in the path of sound waves which is progressing in the OX direction.

As we know that the amplitude that is produced when the fork is moved toward point P, is independent of the movement of the fork.
So, even though the fork is moved towards point P, the amplitude remains constant.

Hence, the amplitude of vibration of P remains constant.

Additional information: Sound waves created by the vibrations of an object, which causes the medium such as air molecules to vibrate. Then this vibrating air can cause the human eardrums to vibrate, which is then interpreted by the brain as the sound. This sound wave exists as the variations of pressure in a medium such as air and water.

Note: Sound waves can have main five characteristics that are Velocity, Wavelength, Time-Period and Amplitude that five physical characteristics of sound wave controls the three psychological features that are pitch, loudness and timbre. Loudness depends on the amplitude, greater the amplitude, louder the sound received.