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# How does frequency affect the sound you hear? What about wavelengths?

Last updated date: 10th Aug 2024
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Hint: Frequency is defined as the number of occurrences of a repeating event per unit of time. It is measured in terms of hertz.

Complete step by step answer:
The sound moves through a medium such as water or air in the form of waves. Sound is measured in terms of frequency and amplitude. Frequency is also referred to as pitch and it is the number of times per second that the sound pressure wave repeats. In general high frequencies produce more oscillations.

The relationship between the speed of the sound, the frequency, and the wavelength will be the same for all the waves and is given by,
${V_w} = f\lambda$
Where ${V_w}$ is the speed of the sound, f is the frequency, and $\lambda$is the wavelength.
If the medium is more rigid, the faster the sound will be.

If the wavelength is shorter than the frequency of the sound will be higher. Similarly, low pitched sounds will have low frequencies.
Frequency can also be defined as the number of complete wavelengths in a given unit of time. Thus as the wavelength increases in size, the energy, and the frequency decreases. Thus as the frequency increases, the wavelength becomes shorter, and similarly, as the frequency decreases, the wavelength becomes longer.

Note: Whenever a noise is made, it creates vibration. The size of the vibration is called the amplitude and the speed of the vibration is called the frequency. Larger vibrations indicate that the sound is louder, called high amplitude. Also, high frequency refers to a higher pitch of the sound.
If the frequency of a wave source is doubled, the speed of the wave also gets doubled.