Question

Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486. 1 nm.

Answer 1

The frequency of the green light emitted by a hydrogen atom with a wavelength of 486. 1 nm will be 6.17 * $10^{-14}$ Hz

The wavelength of light is the distance between corresponding points in two adjacent light cycles, and the frequency of light is the number of cycles of light that pass a given point in one second.

Visible light falls in the range of the EM spectrum between infrared (IR) and ultraviolet (UV). It has frequencies of about 4 × 1014 to 8 × 1014 cycles per second, or hertz (Hz) and wavelengths of about 740 nanometers (nm) or 2.9 × 10−5 inches, to 380 nm (1.5 × 10−5 inches)

f = c/lambda

where

f = frequency of light = ?

lambda = wavelength of light =  486. 1 nm = 486.1 * $10^{-9}$ m

c = speed of light = 3 * $10^{8}$ m/s

f = 3 * $10^{8}$  / 486.1 * $10^{-9}$ = 6.17 * $10^{-14}$ Hz

To learn more about frequency of  light

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