The Correct Answer and Explanation is:
Of course. Here is the correct answer to the matching exercise, followed by a detailed explanation.
Correct Matches
- 100 nm corresponds to Ultraviolet (UV) radiation.
- 100 mm corresponds to Microwave radiation.
- 102 µm corresponds to Infrared (IR) radiation.
- 940 nm corresponds to Infrared (IR) radiation.
Explanation
This exercise requires classifying different wavelengths of light into their correct regions on the electromagnetic (EM) spectrum. The EM spectrum is the continuous range of all types of electromagnetic radiation, ordered by wavelength. Different regions of this spectrum have distinct properties and are given specific names. To solve this, we compare each given value to the standard boundaries of these regions.
The key regions relevant to this problem, ordered from shorter to longer wavelength, are Ultraviolet, Visible, Infrared, and Microwave.
- Ultraviolet (UV) light has wavelengths shorter than visible light, typically ranging from 10 nanometers (nm) to 400 nm.
- Visible light, the range humans can see, spans from approximately 400 nm (violet) to 700 nm (red).
- Infrared (IR) radiation has wavelengths longer than visible light, from about 700 nm up to 1 millimeter (mm).
- Microwaves have even longer wavelengths, starting from around 1 mm and extending to about 1 meter.
Applying this knowledge to the specific values:
- 100 nm: This wavelength is shorter than 400 nm, placing it firmly within the Ultraviolet region.
- 100 mm: This is a much larger unit. Since 1 mm is the approximate boundary between infrared and microwaves, a 100 mm wavelength is well into the Microwave region.
- 102 µm (micrometers): To compare this easily, we can convert it to nanometers. Since 1 µm equals 1,000 nm, 102 µm is equal to 102,000 nm. This value is much longer than the 700 nm end of the visible spectrum and shorter than the 1 mm (1,000,000 nm) start of the microwave region. Therefore, it falls within the Infrared range.
- 940 nm: This wavelength is just slightly longer than the red end of the visible spectrum (700 nm). It is a common wavelength used in remote controls and falls into the near-infrared portion of the Infrared spectrum.
