7. During a photoelectric effect experiment, light possessing 2.53 eV of energy is incident on the photosensitive material. Electrons are emitted with an energy of 1.71 eV of energy. What is the work function of the material? 2.53 ev 4.24 eV 0.82 ev 1.71 eV

Tantalum has a work function of 4.2 eV. The most energetic photoelectron has KE of 2.12 eV. What is the wavelength of the incoming photons? a) 586 nm                            b) 197 nm                       c) 296 nm                        d) none of these.

ASS 3. When light with a wavelength of 222 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.16 × 10-¹⁹ J. Determine the wavelength of light that should be used to quadruple the maximum kinetic energy of the electrons ejected from this surface. nm fo 0 ssf60€ ssf606 5 09588 09 ssf60 ssf60

1. A magnesium surface has a work function of 3.10 eV. Electromagnetic waves with a wavelength of 190 nm strike the surface and eject electrons. Find the maximum kinetic energy of the ejected electrons. Express your answer in volts. f60 C £60* ssf60 sthetic oss 50 ssf60 s ssf60 ssf ectron

The work function of a material refers to the minimum energy required to remove an electron from the material. The work function of tungsten is 4.55 eV. Calculate the maximum wavelength (in nm) for the photoelectric emission of electrons. O λ = 220 nm O λ = 287 nm Oλ = 292 nm Oλ = 273 nm