CAIE A-Level Physics AS 7.1.4 The Definitions of Speed Frequency and Wavelength the Wave Equation V F Questions

Interpret wave properties including wavelength, frequency, period, amplitude and wave speed.

Exam points

Interpret wave properties including wavelength, frequency, period, amplitude and wave speed.

[Maximum number: 1]

A loudspeaker oscillates with frequency f to produce sound waves of wavelength $\lambda$ . The loudspeaker makes N oscillations in time t.

Use your answers in (i) to deduce the equation relating the speed v of the sound wave to f and $\lambda$ .

v(= distance / time $)=N \lambda /(N / f)$ so $v=f \lambda$

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