Question

Hello

Yellow light emitted from a sodium lamp has a wavelength (λ) of 580 nm. Calculate the frequency (ν) and wave number of the yellow light.


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Answer 1

The wavelength of yellow light is 580nm = 580×10-⁹ m.

The frequency of yellow light.

$ν = \frac{c}{λ} = \frac{3.0 \times {10}^{8}</h3><h3>m/s}{580 \times {10}^{ - 9}m } \\ = 5.17 \times {10}^{14} </h3><h3></h3><h3> /s \\ \\ \\ the \: wave \: number \: of \: yellow \: light \: = \\ \\ ν = \frac{1}{λ} = \frac{1}{580 \times {10}^{ - 9} m} = 1.72 \times {10}^{6} </h3><h3>/m.$

Explanation:

Hope it helps you out.