Ex. 35: Determine the wavelength of photon emitted which has an energy at 2.5 eV.
Q: Photons of a certain ultraviolet light have an energy of 6.96 x 109 J. (a) What is the frequency of…
A: a) The expression for the frequency is, f=Ehf=6.96×10-19J6.63×10-34Jsf=1.04×1015Hz
Q: 7. An electron, traveling at a speed of 6.00 x 106 m/s, strikes the target of an X-ray tube. Upon…
A: We apply conservation of momentum before and after electron strikes the target mev1=mev2+px-ray now…
Q: A certain helium-neon laser pointer, emitting light with a wavelength of 632 nm, has a beam with an…
A:
Q: What is the output power, in watts, of a light source that emits light with a wavelength of 596 nm,…
A: This problem can be solved using power formula and energy of photon formula.
Q: Light strikes a metal surface, causing photoelectric emission. The stopping potential for the…
A: Stopping potential of ejected electrons, Work function of the metal,
Q: a) Calculate the number of photoelectrons per second ejected from a 0.75-mm² area of sodium metal by…
A: a) The required number of photo-electrons is, n=PE =IAhcλ =IAλhc…
Q: The wavelength of the yellow spectral emission line of sodium is 590 nm. At what kinetic energy…
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Q: When ultraviolet light with a wavelength of 354 nm falls on a certain metal surface, the maximum…
A: Given: Ultraviolet light of wavelength λ=354 nm Kinetic energy of photoelectrons…
Q: A 592 nm laser emits 4.94 x 1019 photons per second, how much total energy (in J) would this…
A: Given Data Wavelength of the photons is λ=592nm=592×10-9 m Number of photons emitted per unit second…
Q: In a photoelectric experiment using a Potasium surface, you find a stopping potential of 0.57 V for…
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Q: Suppose a photon has a wavelength of 2.9 μm. Calculate the momentum of the photon in kg m/s. what…
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Q: When ultraviolet light with a wavelength of 374 nm falls on a certain metal surface, the maximum…
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Q: 11B). Photons with energy of 2.35 eV are used in a photoelectric effect experiment. The binding…
A: Using the given photon energy and binding energy of material, we will first calculate kinetic…
Q: . i. Calculate the maximum wavelength λmax of electromagnetic radiation that could eject electrons…
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Q: A 245 W bulb produces monochromatic U-V light of frequency 1.34x1015 Hz. If the efficiency of the…
A: Power = 245 efficiency = 24% Thus , effective power = 0.24 * 245 = 58.8 W
Q: s) The photoelectric effect can be used to generate power using a solar cell. We will use Aluminum…
A: Given: The work function of the aluminum cathode is ϕ = 4.26 eV The temperature of the sun is T =…
Q: The graph below shows the maximum kinetic energy of emitted photoelectrons as a function of the…
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Q: A free electron in a gas is struck by a 5.95 nm X-ray, which experiences an increase in wavelength…
A: Given: The wavelength of an electron before being struck by the x-ray is λ = 5.95 nm The increase in…
Q: Determine the wavelength of a 2.5 keV electron.
A: Given: The energy of the electron is 2.5 keV. To Determine We have to determine the wavelength of an…
Q: For a certain metal, the threshold wavelength for the photoelectric effect is 719.0 nm. What is the…
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Q: 0.062-nm photons are incident on stationary electrons. A scattered photon is observed at 134°. Find…
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Q: What is the wavelength (in m) of a 2.06 eV photon? Find its frequency in hertz.
A: Given that, Energy of photon, E = 2.06 eV We know that Planck constant, h = 6.626 × 10-34Js…
Q: An electron in a piece of aluminum requires at least 6.73e-19 J of energy to be ejected from the…
A: "Since all questions are different, as per guidelines we can author only 1st one. Please repost…
Q: A photon with a wavelength of 5.00 nm strikes a surface and emits an electron with kinetic energy of…
A: Given data: Wavelength of photon (λ) = 5.00 nm = 5.00×10-9 m Kinetic energy (KE) = 143 eV Required:…
Q: ges by a 5.95 nm X-ray, which experiences an increase in wavelength of 1.97 pm. How fast is the…
A: Scattered electron.
Q: A 519 nm laser emits 2.41 x 1019 photons per second, how much total energy (in J) would this…
A:
Q: 5.00-eV photons are incident on a metal, generating photoelectrons that have a maximum kinetic…
A: Given data- Energy of photon E=5.00 eV maximum kinetic energy KEmax=0.69 eV Work function=W


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- MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A solid metal sphere emits 1.62 x 1020 photons every second with a radiating power of 1.93 W. (a) Determine the energy associated with each photon. eV (b) Assuming the sphere's power output is associated with the peak wavelength, determine the temperature of the sphere at which this wavelength is emitted. K Additional Materials O ReadingYou set up a photoelectric experiment with an unknown metal to eject electrons. You use light of wavelength λ = 670 nm, which just BARELY ejects electrons from the metal. Planck□s constant is either h = 6.63 x 10-34 J-s or h = 4.14 x 10-15 ev.s. a) What is the binding energy of the unknown metal in eV? ev b) You change the light source to one with a wavelength of λ = 310 nm. Using the binding energy you found in the previous step, find the maximum kinetic energy of an electron that is ejected from the metal in Joules. J c) What is the stopping voltage for an electron with the kinetic energy you just found? VWhat is the wavelength (in m) of a 2.06 eV photon? Find its frequency in hertz.
- s) The cutoff frequency of a specific metal is known to be 0.72x1015Hz. During a photoelectric experiment, 3.7x102º photons with a wavelength of 167nm are striking a plate every second. What is the power of the photons and what is the maximum kinetic energy of the ejected electrons?Determine the wavelength of an electron that has a kinetic energy of 1.15 × 10 J. Report your answer in units of nm.A) Astronomers measure the peak wavelength of a nearby star to be 410 nm. What is the star's temperature? B) How much energy does a single photon of light have at this wavelength? C) An electron bound in an unknown metal requires 1.45E-19 ] of energy under the photoelectric effect to become free of the metal. How much kinetic energy would it have if struck by the photon froft part (b)? D) What is the final speed of the elctron from part (c)?
- 9. Considering the photoelectric effect; a) If a material has a cutoff wavelength of 780 nm what is the work function of the material? b) What is the maximum speed of liberated electrons when light with a wavelength of 410 nm is used to illuminate the material? If a liberated electron has 3.2349 eV of kinetic energy and it was a photon emitted from a hydrogen atom transition that liberated it, what energy level transition occurred? State both the initial and final energy level.QUESTION 24 When ultraviolet light with a wavelength of 317 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.76 x 10-1 J. How much energy, in Joule, does an electron have to gain in order to escape from the metal surface? Exponential format with 3 SF.You set up a photoelectric experiment with an unknown metal to eject electrons. You use light of wavelength λ = 660 nm, which just BARELY ejects electrons from the metal. Planck s constant is either h = 6.63 x 10-34 J.s or h = 4.14 x 10-15 ev.s. a) What is the binding energy of the unknown metal in eV? eV b) You change the light source to one with a wavelength of λ = 300 nm. Using the binding energy you found in the previous step, find the maximum kinetic energy of an electron that is ejected from the metal in Joules. c) What is the stopping voltage for an electron with the kinetic energy you just found? Submit Answer