the threshold frequency of cesium metal is 4.38 x 104 Hz, calculate the kinetic energy gre of an electron ejected from the surface of cesium mc n = metal when it is irradiated with light of wavelength n 4- 400.0 nm. dong SA G HUGI 4-30. The threshold frequency of a metal can be of 25 n determined from measurements of the speed of 4- the ejected electrons. Electrons were ejected from a W metal with a speed of 5.00 x 103 m.s1 when irradiated by light having a wavelength of 390.0 nm. Determine the threshold frequency of this metal.O Se 4 919 tinrecore tsprG qoc t DE BROGLIE WAVELENGTHSpnolod vldsdo Broglie wavelength of a proton

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