The yellow light given off by a sodium vapor lamp used for public lighting has a wavelength of 5.89x10^-7 m. What is the frequency of this radiation?

λ= Wavelength = 5.89 × 10^-7 m => 589×10^-9 m

f = frequency = ?

c = Speed of light in a vacuum = 3×10^8 m/s

** Hz = 1/sec

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