Question

The ozonosphere absorbs the
A. Visible light
B. Microwaves
C. Infrared radiation
D. Ultraviolet radiations

Answer 1

Hint: The ozone layer is a stratospheric region of the Earth that blocks much of the ultraviolet radiation of the Sun. It contains a high concentration of ozone in relation to other areas of the atmosphere, but it is also low in comparison to other stratospheric gases.

Complete step-by-step solution:
To solve this question, first, we have to know about the ozonosphere and electromagnetic spectrum.
The ozonosphere is a stratospheric layer that contains enough ozone to absorb much of the
ultraviolet radiation from the sun. The ozone layer is a fairly thin sheet-like expanse or area lying above or below another layer. The electromagnetic spectrum is a way to imagine the proportions of the frequency and wavelength of the different sources of energy. Electromagnetic radiation has the characteristics of waves and particles. For medical purposes, we can divide the electromagnetic spectrum in the UV range.
Now, let us find the solution from the given options -
The visible spectrum is the part of the electromagnetic spectrum visible to the human eye.
Electromagnetic radiation in this wavelength spectrum is called visible light or simply light. A normal human eye can respond to wavelengths of approximately $ {\rm{380}} $ to $ {\rm{740}} $ nanometers.
Microwave is a type of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter; with frequencies between $ {\rm{300}}\;{\rm{MHz}} $ to $ {\rm{300}}\;{\rm{GHz}} $. Different sources describe various frequency ranges as microwaves.
Infrared, also referred to as infrared light, is electromagnetic radiation of wavelengths longer than visible light. This is usually not visible to the human eye, while Infrared at wavelengths of up to $ {\rm{1050}} $ nanometers from specially pulsed lasers can be seen under some conditions by humans.
Much of the natural UV light people receive comes from the sun. Nevertheless, only about ten percent of the sunlight is Ultraviolet, and only about one third of it makes holes in the atmosphere to touch the earth. No measurable UVC from solar radiation hits the Earth’s surface, as ozone, molecular oxygen and water vapor in the upper atmosphere fully absorb the shortest UV wavelength.
Thus, the right answer is option D. i.e., Ultraviolet radiations.

Note: Electromagnetic radiation comes from the sun and is distributed in waves or particles at various wavelengths and frequencies. A large variety of wavelengths is known as the electromagnetic spectrum. The spectrum is typically classified into $ {\rm{7}} $ regions in order to reduce wavelength and increase energy and frequency. Common names are electromagnetic waves, microwaves, gamma-rays, ultraviolet, visible light, ultraviolet, and x-rays.