In ultraviolet wavelength values such as 2600-2700 A, which unit is used?

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Multiple Choice

In ultraviolet wavelength values such as 2600-2700 A, which unit is used?

Explanation:
Wavelengths in ultraviolet light are often expressed in Angstroms because this unit matches the tiny distances involved. An angstrom is 10^-10 meters, so 2600–2700 Å equals 260–270 nm, which falls squarely in the ultraviolet range. Nanometers could also express UV wavelengths, since 1 nm equals 10 Å, so they’re easily convertible. The other units describe much larger scales (micrometers and meters), which are not typical for UV wavelengths. Therefore, the appropriate unit for 2600–2700 is Angstroms.

Wavelengths in ultraviolet light are often expressed in Angstroms because this unit matches the tiny distances involved. An angstrom is 10^-10 meters, so 2600–2700 Å equals 260–270 nm, which falls squarely in the ultraviolet range. Nanometers could also express UV wavelengths, since 1 nm equals 10 Å, so they’re easily convertible. The other units describe much larger scales (micrometers and meters), which are not typical for UV wavelengths. Therefore, the appropriate unit for 2600–2700 is Angstroms.

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