An X-Ray machine operates at a wavelength of 0.1nm. (1eV = 1.60 x 10-19 J) (a)  What is the frequency? (b)  What is the energy of an x-ray photon emitted from this machine?

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A: Given,

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.