WAEC - Physics (2021 - No. 29)
Which of the arrangements of radiations below shows decreasing order of wavelengths?
X-rays> radio waves > infrared radiations
Radio waves> infrared radiations > X-rays
Infrared radiations > radio waves > X-rays
X-rays> infrared radiations > radio waves
Explication
radio waves have a longer wavelength than infrared light, and infrared than x-rays in the electromagnetic spectrum.