3. When ultraviolet light with a wavelength of 240 nm is directed onto a metal plate, electrons are emitted from plate 1

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3 When Ultraviolet Light With A Wavelength Of 240 Nm Is Directed Onto A Metal Plate Electrons Are Emitted From Plate 1 1 (83.42 KiB) Viewed 10 times

3. When ultraviolet light with a wavelength of 240 nm is directed onto a metal plate, electrons are emitted from plate 1, crossing the gap to plate 2 and cause a current to flow through the wire connecting the two plates. The battery voltage is gradually increased until the current in the ammeter drops to zero, at which point the battery voltage is 1.40 V. plate 2 AV incident light electrons ammeter plate 1 a. What is the energy of the photons in the beam of light, in eV? b. What is the maximum kinetic energy of the emitted electrons, in eV? C. What is the work function of the metal, in eV? d. What is the longest wavelength that would cause electrons to be emitted, for this metal? e. Is this wavelength in the visible spectrum? If not, in what part of the spectrum is this light found?