The S.I unit of frequency is____________.
The hertz (symbol: Hz) is the derived unit of frequency in the International system of unit (SI) and is defined as one cycle per second. It is named after Heinrich Rudolf Hertz. the first person to provide conclusive proof of the existence of electro magnetic wave. Hertz are commonly expressed in multiples: kilohertz (103 Hz, kHz), megahertz (106 Hz, MHz), gigahertz (109 Hz, GHz), terahertz (1012 Hz, THz), petahertz (1015 Hz, PHz), exahertz (1018 Hz, EHz), and zettahertz (1021 Hz, ZHz)