When two slightly different frequency waves superimpose, _ is formed.
Correct answer: A. Beats
- A. Beats
- B. Stationary waves
- C. Light waves
- D. Sound waves
Explanation
When two slightly different frequency waves superimpose, beats are formed. After interference, there are alternate maxima and minima in the resultant intensity of sound. The maximum and minimum sound formed cause the phenomenon of beats.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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