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Calculate the frequency and wave number ...

Calculate the frequency and wave number of radiation with wavelength 480 nm.

Text Solution

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`v = (c )/(lamda) = (3 xx 10^(8) m//s)/(480 xx 10^(-9)m) = 6.25 xx 10^(14)Hz` and Wave number `= (1)/(lamda) = (1)/(480 xx 10^(-9)m) = 2.80 xx 10^(6) m^(-1)`
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Knowledge Check

  • What will be the wavenumber of yellow radiation having wavelength 240 nm?

    A
    `1.724xx10^(4)cm^(-1)`
    B
    `4.16xx10^(6)m^(-1)`
    C
    `4xx10^(14)Hz`
    D
    `219.3xx10^(3)cm^(-1)`

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