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Frequency of light problem

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What is the frequency of violet light, λ = 410 nm?

___Hz

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  1. f=c/λ

    =3*10^8/410*10^-9

    =7.3 * 10^14 Hz


  2. Frequency = C/lambda.  

    C is the speed of light which is 29,979,245,800 centimeters per second.

    Therefore the frequency when lambda = 410 nm is:

    7.3120 x 10^14 Hz

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