State two properties that are common to all types of radiation in the electromagnetic spectrum.?

Question

state two properties that are common to all types of radiation in the electromagnetic spectrum.

Answer 1

1. Speed in vacuum is same at 300,000 km/sec

2. Have both Electric & Magnetic components, perpendicular to each other such that their combined plane (wavefront) is perpendicular to direction of their propagation [E X H].

Answer 2

the speed is constant in all radiation i.e 3*10^8 m/s

&

they does not need a medium for propagation.

they are 3-dimension waves

Answer 3

It all travels at the speed of light (c) through a vacuum. Also, the wavelength is related to frequency by c = wavelength*frequency