Ex. 35: Determine the wavelength of photon emitted which has an energy at 2.5 eV.
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A: a) The required number of photo-electrons is, n=PE =IAhcλ =IAλhc…
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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…
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A: Given data: The wavelength of light is: λ = 145 nm The Planck’s constant is: h = 6.626×10-34 J.s The…
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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: The binding energy of Sodium is 2.28 eV. Calculate the number of photoelectrons ejected from a 1.00…
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Q: . i. Calculate the maximum wavelength λmax of electromagnetic radiation that could eject electrons…
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Q: s) The photoelectric effect can be used to generate power using a solar cell. We will use Aluminum…
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Q: The graph below shows the maximum kinetic energy of emitted photoelectrons as a function of the…
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Q: During an experiment 8.8x1014 Hz light shines on a metal plate and the Photoelectric Effect occurs.…
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Q: For a certain metal, the threshold wavelength for the photoelectric effect is 719.0 nm. What is the…
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Q: Gaseous calcium atoms absorb light at 423, 272, and 240 nm. After a photon of 272 nm is absorbed…
A: Gaseous calcium atoms absorb light at 423, 272, and 240 nm.
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Q: An electron in a quantum system has allowed energies E1=1.0 eV, E2 = 4.0 eV, and E3 = 6.0 eV. What…
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Q: QUESTION 7 A metal having a work function of 2.8 eV is illuminated with monochromatic light whose…
A: Given data, Work function is given ϕ0=2.8 eV =2.8×1.6×10-19=4.48×10-19 J.
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: A strange metallic rock is found and is being tested. Suppose that light with a frequency of 9.40 ✕…
A: Given: Frequency ν=9.40×1014 Hz Stopping potential Vs=1.50 V Standard data used: Planck's constant…
Q: The binding energy of sodium is 2.28 eV. Calculate the number of photoelectrons ejected from a 1.00…
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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
Q: In a photoelectric effect experiment, ultraviolet light of wavelength 320 nm falls on the…
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Q: A photoelectric experiment has a work function = 6.35 eV. The minimum cutoff frequency is 1.53E15…
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Q: A solid metal sphere emits 1.62 x 1020 photons every second with a radiating power of 1.93 W. (a)…
A: a. given, E=1.62×1020P=1.93 W Energy emitted by each photons, E=Pt=1.93 J1.62×1020 =1.191×1020…
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- If a photon of wavelength 0.0665 nm hits a free electron and is scattered at an angle of 35◦ from its original direction, findat. the change in wavelength of this photon,b. the wavelength of the scattered photon,vs. the change in energy of the photon (is it a loss or a gain?), and d. the energy gained by the electron.You 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? VIf all the energy from a 107 W light bulb is emitted at 666.0 nm, what is the energy of each photon in joule ?
- A 100-W sodium-vapor lamp emits yellow light of wavelength 590 nm. Calculate the number of photons emitted per second.Photons of wavelength 248.6 nm strike a metal whose work function is 3.5 eV. What is the KE of the most energetic photoelectron? a) 1.5 eV b) 2.5 eV c) 3.5 eV d) none of these.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.
- 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.A photon with a wavelength of 4.16 nm strikes a surface and emits an electron with kinetic energy of 124.6 eV (electron volts). What is the binding energy of the electron in J?