Question

define frequency of oscillation

Answer 1

For cyclical processes, such as rotation, oscillations, or waves, frequency is defined as a number of cycles per unit time. In physics and engineering disciplines, such as optics, acoustics, and radio, frequency is usually denoted by a Latin letter f or by the Greek letter or ν (nu) (see e.g. Planck's formula).

Answer 2

Hey,this is your answer
The frequency (f) of an oscillation is measure in hertz (Hz) it is the number of oscillations per second.