Frequency is denoted by

Frequency is denoted by the symbol $f$ (in most scientific contexts) or sometimes $\nu$$\nu$ (nu) in wave-related contexts, particularly in physics.

Explanation:

• $f$$f$: Commonly used in general contexts like electronics and engineering to represent frequency.
• $\nu$$\nu$: Used in physics and quantum mechanics, especially when discussing electromagnetic waves, to denote the frequency of a wave.

Units:

The SI unit of frequency is the hertz (Hz), where 1 Hz = 1 cycle per second.