The number of vibrations executed in one second is called:
Correct answer: B. Frequency
- A. Period
- B. Frequency
- C. Amplitude
- D. Wavelength
Explanation
Frequency is the number of vibrations or cycles completed by a vibrating object in one second. It is measured in hertz (Hz).Period refers to the time taken to complete one vibration, and it is the reciprocal of the frequency. Amplitude refers to the maximum displacement of an oscillating object from its equilibrium position. Wavelength is the distance between two consecutive crests or troughs of a wave.
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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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