Answer:
Frequency
Explanation:
The number of cycles completed in one second by an oscillating object is called its frequency. The term frequency shows number of times an oscillation is occurring. It is denoted by [tex]\nu[/tex]. The reciprocal of frequency is called the time period of the wave i.e.
[tex]\nu=\dfrac{1}{T}[/tex]
T = time period
So, the correct option is (a) "frequency".
