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31 December, 12:06

If the approximate energy of a photon present in an X-ray is 8.0 * 10-15 joules, what's the frequency of the X-ray? Given: Planck's constant is 6.63 * 10-34 joule·seconds.

(A) 1.2 * 1014 hertz

(B) 1.2 * 1019 hertz

(C) 8.2 * 1018 hertz

(D) 8.3 * 1019 hertz

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Answers (1)
  1. 31 December, 14:55
    0
    E=hf

    E/h=f

    8e-15/6.63e-34=1.2e19

    B is correct
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