1. infrared, microwave, radiowave
QUESTION:
Which of the following regions of the electromagnetic spectrum has the longest wavelengths? A. x-rays, B. visible, C. microwave, D. radiowave
Electromagnetic radiation that humans can see: 400 to 800 nm (the “visible spectrum”)
x-rays, ultraviolet
infrared, microwave, radiowave
Longer wavelength
SCRIPT:
Which of the following regions of the electromagnetic spectrum has the longest wavelengths? A. x-rays, B. visible, C. microwave, D. radiowave
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For us to be able to see electromagnetic radiation, its wavelength must be between 400 and 800 nanometers.
This is known as the visible spectrum.
Electromagnetic radiation that we perceive as violet is at the short wavelength end of the visible spectrum
Red light is at the long wavelength end of the spectrum
The term electromagnetic spectrum refers to the entire range of possible wavelengths. The electromagnetic spectrum is divided into several regions.
Wavelengths shorter than violet belong to the ultraviolet and x-ray regions. X-rays have shorter wavelengths than ultraviolet radiation.
CLICK Wavelengths longer than that of red light belong to the infrared, microwave, and radiowave regions.
Among these, radiowaves have the longest wavelength.
The correct answer is D.
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2. Video ID: © 2008, Project VALUE (Video Assessment Library for Undergraduate Education), Department of Physical Sciences Nicholls State University Author: Glenn V. Lo Narrator: Funded by Louisiana Board of Regents Contract No. LA-DL-SELECT-13-07/08