V light, with wavelengths ranging from approximately 10 nm to 400 nm is incident on a niobium surface.  Suppose that the work function of Niobium (Nb) is 4.3 eV.  (1) Based on the range of wavelengths provided above, what is the corresponding range of frequencies of UV light?  (2) Find the range of frequencies for which no electrons are ejected from the Nb surface.  (3) Find the maximum kinetic energy of electrons which are ejected from this surfac

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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.