Heinrich Rudolph Hertz laid the foundation for the future development of radio, telephone and telegraph. The SI unit of ____ was named as 'Hertz' as his honour.

Options

A. A) Sound
B. C)Heat
C. C)Light
D. D)Frequency

Answer

D

Explanation

Heinrich Rudolf Hertz was a German physicist who first conclusively proved the existence of the electromagnetic waves. The unit of frequency, cycle per second, was named the "hertz" in his honor. He laid the foundation for future development of radio, telephone and telegraph.