Arrange the following electromagnetic waves in the descending order of their wavelengths:
(a) microwaves (b) IR rays
(c) UV radiations (d) $γ$ rays

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Solution

Electromagnetic spectrum:
The electromagnetic spectrum is the entire distribution of electromagnetic radiation according to frequency or wavelength.

Diagrammatic representation of electromagnetic spectrum:

Analyzing diagram:
From the given diagram the longest wavelength is microwave followed by infrared ray, ultraviolet ray, and gamma-ray.

Hence, the given electromagnetic waves in the descending order of their wavelengths are:
Microwaves, IR rays, UV radiations, and $γ -$ rays.

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Similar questions

The most energetic electromagnetic radiations are :

(a) microwaves (b) ultraviolet waves

A.The wavelength of microwaves is greater than that of $U V -$ rays.

B.The wavelength of $I R$ rays is lesser than that of $U V -$ rays.

C.The wavelength of microwaves is lesser than that of $I R$ rays.

D. Gamma rays have the shortest wavelength in the electromagnetic spectrum.

Of the above statements

γ - r a y s

X - r a y s

(a) Arrange the following radiations in the order of their increasing wavelength :

X rays, infrared rays, radio waves, gamma rays, and microwaves.

(b) Name the radiation which is used for satellite communication.

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