Physics

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Medical x rays are taken with electromagnetic waves having a wavelength around .1 nm. What are the frequency, period, and wave number of such waves?

ok I got the frequency as 3 * 10^18 Hz and the wave number as 6.3 *10^10 rad/m but I can't seem to remember how to get period.

  • Physics -

    period = 1/frequency

  • Physics -

    frequency = speed/wavelength = c/L
    = (3*10^8 m/s) / .1*10^-9 m
    = (3/.1) * 10^17 s
    = 3 * 10^18 Hz check

    k = 2 pi/L
    k = 2 pi / (.1*10^-9)
    = 6.28 * 10^10 check

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