. The number of vibration/ oscillation executed per second is known as

A: Frequency

B: Amplitude

C: Wave length

D: Pitch

Best Answer


  • Frequency is the number of times a repeating occurrence occurs per unit of time. 
  • To distinguish it from spatial frequency, it's sometimes called temporal frequency or ordinary frequency. 
  • The Hertz (Hz), unit of frequency equals one occurrence every second. 
  • Because it represents the length of one cycle in a recurring occurrence, the period is the reciprocal of the frequency.

Final answer:

Hence, option A is correct, i.e., Frequency.

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