Question: 3 ) Cesium has a work function f = 1 . 9 eV . a ) Find the threshold frequency of the emitted radiation. In

3) Cesium has a work function f =1.9 eV. a) Find the threshold frequency of the emitted radiation. In what region of the spectrum does this radiation lie? b)If a Cesium photoelectrode is illuminated with light of frequency 8.21014 Hz, what is the stopping potential for the photoelectrons?

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