Question

Define the following terms and state their SI units:

(a) Wavelength (b) Frequency (c) Amplitude

Derive a relationship to show how the wavelength and frequency of a sound wave are

related to its speed.​

Answer 1

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Answer 2

Explanation:

A) SI unit of Wavelength = meter

B) SI unit of frequency = hertz (Hz)

C) SI unit of amplitude = meter

Let 'T' of the vibrating body = T

Let 'T' of the vibrating body = TWave Velocity of the body= v

Let 'T' of the vibrating body = TWave Velocity of the body= vFrequency = f

Let 'T' of the vibrating body = TWave Velocity of the body= vFrequency = fWave velocity= Wavelength/Time taken

Let 'T' of the vibrating body = TWave Velocity of the body= vFrequency = fWave velocity= Wavelength/Time takenv= λ/T

Let 'T' of the vibrating body = TWave Velocity of the body= vFrequency = fWave velocity= Wavelength/Time takenv= λ/Tv= λ×1/T

Let 'T' of the vibrating body = TWave Velocity of the body= vFrequency = fWave velocity= Wavelength/Time takenv= λ/Tv= λ×1/T[1/T= f]

Let 'T' of the vibrating body = TWave Velocity of the body= vFrequency = fWave velocity= Wavelength/Time takenv= λ/Tv= λ×1/T[1/T= f]v= λ×f

Let 'T' of the vibrating body = TWave Velocity of the body= vFrequency = fWave velocity= Wavelength/Time takenv= λ/Tv= λ×1/T[1/T= f]v= λ×f Thus, Wave speed= Wavelength × Frequency

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