A light source emitting radiation at 7.00 x 10¹4 Hz is incapable of ejecting photoelectrons from a certain metal. In an attempt to use this source to eject photoelectrons from the metal, the source is given a velocity toward the metal. c) When the speed of the light source is increased to 0.9c calculate the maximum kinetic energy of the photoelectron.
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- A photoelectron is produced from a bismuth surface (which has a work function of 4.31 eV) at a speed of 0.910c. Relativistic effects should be included in this problem. What wavelength of light was used to produce this photoelectron? typed response pleaseWhen ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is 1.10 eV. What is the maximum kinetic energy Kmax of the photoelectrons тах when light of wavelength 320 nm falls on the same surface?q10
- Light strikes a metal surface, causing photoelectric emission. The stopping potential for the ejected electrons is 6.9 V, and the work function of the metal is 2.1 eV. What is the wavelength of the incident light? Number Units4) The minimum frequency for the photoelectric effect to occur in a given metal is 5 x 10¹4 Hz. a) Determine the metal's work function. b) If light of frequency 7.5 x 10¹4 Hz is shined on the metal, determine the speed of the most active electron released.Please provide a clear explanation and calculation. Thank you.
- EM Waves Problem 13: A light sail is a propulsion technique that uses large sails to catch light and propel a vehicle in the vacuum of space. In a particular application, an Earth based laser illuminates such a sail perpendicularly with a beam of light of frequency 590 THz while emitting 3.8 × 1041 photons per second. Part (a) If 80% of the emitted photons reach the sail and are absorbed by it, find the resulting force, in newtons, on a sail that is momentarily at rest with respect to the laser. Part (b) Now assume the photons are reflected by the sail. Keeping all the other assumptions of part (a), find the force the light beam exerts on the sail, in newtons. Part (c) Ideally it would be best to use photons provided by natural sources to push the sail. If a star emits ns photons per second uniformly in all directions, with all the photons of frequency fs, enter an expression for the force on the sail if all the photons that strike it are reflected. Assume that the sail has an…Is the photoelectric effect a direct consequence of the wave character of EM radiation or of the particle character of EM radiation? Explain briefly.A photoelectron is ejected from a metal via the photoclectric effect. A closer look reveals it is exhibiting wave-like behavior with a wavelength of 0.638 nm. Determine the kinetic energy of the photoelectron. If the photoelectron was ejected from a metal by ultraviolet light with a wavelength of 75 nm, what is the work function of the metal from which it was emitted?
- 13. During a photoelectric effect experiment, light possessing 3.54 eV of energy is incident on a photoelectric material. The work function of the material is equal to 1.53 eV. What is the kinetic energy (in eV) of the electrons emitted?MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Photoelectrons from a material whose work function is 2.31 eV are ejected by 477 nm photons. Once ejected, how long does it take these electrons (in ns) to travel 2.35 cm to a detection device? ns Additional Materials O Reading8 5.00-eV photons are incident on a metal, generating photoelectrons that have a maximum kinetic energy of 0.69 eV. Based on the reference table provided at the top of this exam, what is this metal? sodium (Na) O copper (Cu) aluminium (Al) O zinc (Zn) O iron (Fe)