What is the minimum frequency in (THz) of light needed to eject electrons off a metal with a work function of 3.00 ev
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- Consider photons incident on a hydrogen atom. (a) A transition from the n = 4 to the n = 7 excited-state requires the absorption of a photon of what minimum energy? eV(b) A transition from the n = 1 ground state to the n = 6 excited state requires the absorption of a photon of what minimum energy? eVWhen light with a wavelength of 208 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.59 × 10-19 J. Determine the wavelength (in nm) of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface.The work function of caesium metal is 2.14 eV. When light of frequency 6 x 1014 Hz is incident on the metal surface, photoemission of electrons occurs. What is the maximum kinetic energy of the emitted electrons,
- Light with wavelength ? = 635 nm is incident on a metallic surface. Electrons are ejected from the surface. The maximum speed of these electrons is v = 4.40 ✕ 105 m/s. a) What is the work function of the metal (in eV)? b) What is the cutoff frequency for this metal (in Hz)?Attached is question.When light of wavelength 220 nm falls on a gold surface, electrons having a maximum kinetic energy of 0.54 eV are emitted. Find values for the following. (a) the work function of gold answer in eV (b) the cutoff wavelength answer in nm (c) the frequency corresponding to the cutoff wavelength answer in Hz
- Light with an intensity of 10−10W/m2 is shone perpendicular to the surface a metal that has one free electron per atom. Distance between atoms approx 2, 6A˚. Based on the notion of light as a wave and the assumption that light evenly distributed over the entire metal surface, (a) how much energy each electrons per second? (b) if the electron binding energy is 4.7eV , how long does the electron collect energy to escape the metal surface?Violet light of wavelength 350 nm ejects electrons with a maximum kinetic energy of 0.87 eV from a certain metal. What is the work function of electrons to this metal, in electron volts ?