Question

Which is not a true statement concerning electromagnetic radiation?

It travels through space at 3.0 x 1010 cm/s.
It travels in a straight line.
It has the fastest speed possible in nature.
The sun is a source of it.

Answer 1

Light or visible light is electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight.[1] Visible light has wavelength in a range from about 380 nanometres to about 740 nm, with a frequency range of about 405 THz to 790 THz. In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not.