Question

20. What is the unit of
wavelength:

Answer 1

Answer:

Angstrom

Explanation:

Angstrom (Å), unit of length used chiefly in measuring wavelengths of light, equal to 10−10 metre, or 0.1 nanometer. It is named for the 19th-century Swedish physicist Anders Jonas Ångström.

Answer 2

Answer: This may help you

Explanation:

The SI unit of wavelength is meter usually denoted as m. While measuring wavelength the multiples or fractions of a meter is also used. Notably, exponential powers of 10 are used when wavelengths are of a large property. When there are shorter wavelengths they are expressed as negative exponentials.