Question

48 multiple choice 4 points order the following from least energy to most. ultraviolet, infrared, x-rays, infrared < ultraviolet < x-rays infrared < x-rays < ultraviolet x-rays < ultraviolet < infrared ultraviolet < infrared < x-rays ultraviolet < x-rays < infrared x-rays < infrared < ultraviolet

Explanation:

Step1: Recall energy - wavelength relation

The energy of electromagnetic radiation is related to its frequency (or wavelength) by the formula \(E = h
u=\frac{hc}{\lambda}\), where \(h\) is Planck's constant, \(
u\) is frequency, \(c\) is the speed of light, and \(\lambda\) is wavelength. Higher frequency (shorter wavelength) means higher energy.

Step2: Order of wavelengths (and energy)

The order of electromagnetic waves from longest wavelength (lowest energy) to shortest wavelength (highest energy) in the given options: infrared has longer wavelength than ultraviolet, and ultraviolet has longer wavelength than x - rays. So the energy order (least to most) is infrared < ultraviolet < x - rays.

Answer:

A. infrared < ultraviolet < x - rays