➷ The correct option is C. hertz.
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Answer:
Hertz
Explanation:
The number of oscillations or vibrations per unit time is called frequency of a wave. The time taken to complete one oscillation is called time period of a wave. There is relation between the frequency and the time period. It is given by :
[tex]T=\dfrac{1}{\nu}[/tex]
[tex]\nu[/tex] is the frequency of a wave
[tex]\nu=\dfrac{1}{T}[/tex]
The SI unit of T is second (s). So, the SI unit of frequency is [tex]s^{-1}[/tex] or Hertz. So, the unit of frequency is Hertz.
