Is frequency denoted by Lambda?

The more cycles per second, the higher the frequency. Frequency is symbolized by either the ancient Greek letter v (pronounced nu) or is symbolized simply by f for frequency.17 May 2018

Wavelength is usually denoted by the Greek letter lambda (λ); it is equal to the speed (v) of a wave train in a medium divided by its frequency (f): λ = v/f .

It is not the English alphabet v, it is the Greek letter nu. It represents the frequency of the wave . Frequency is the number of vibrations per second.