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9. The graph in the figure was measured in a photoelectric experiment a. b. C. d....
1.(16 pts) (1) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09...
1.(16 pts) (1) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09 x 1015 1/s before it can eject an electron from the surface of the metal. Calculate the work function of Molydenum in Joules. (ii) What is the wavelength, in nm, of the photon associated with the work function? (iii) If molybdenum is irradiated with light of wavelength 120 nm, what is the maximum kinetic energy, in Joules, of the electron emitted? Recall the Einstein...
In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a metal by...
In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a metal by a photon was the difference between the energy of a photon and a threshold energy value for the metal. If you were to perform a similar experiment with lead, which has a threshold energy of 6.81 × 10⁻¹⁹ J, and ultraviolet light of wavelength 38.5 nm, what would be the speed (v) of the dislodged electron? (K.E. = 1/2mv². The mass of the electron...
1.(16 pts) (i) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09...
1.(16 pts) (i) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09 x105 1/s before it can eject an electron from the surface of the metal. Calculate the work function of Molydenum in Joules (ii) What is the wavelength, in nm, of the photon associated with the work function? (iii) If molybdenum is irradiated with light of wavelength 120 nm, what is the maximum kinetic energy, in Joules, of the electron emitted? Recall the Einstein equation...
Question (2) Choose the correct answer. Justify your answer In a photoelectric experiment, the stopping potential...
Question (2) Choose the correct answer. Justify your answer In a photoelectric experiment, the stopping potential is 1 V, the work function is 2 eV. The intensity of the incident light is doubled and the frequency reduces to half its initial value. Answer the following two questions 1) In this new situation, the work function of the cathode is: a) 4 eV b) 2 eV l eV d) 6 eV e) 3 eV In this new situation, the saturation current:...
a and c following questions concerning this experime fem 3 Consider the photoelectric effect experiment she...
a and c
following questions concerning this experime fem 3 Consider the photoelectric effect experiment she men shown below. Answer the ev ( I n coming this experiment. The metal plate has a workfunction of Vacuum tube Photon Electron Metal Plate of a current to be measured by the ammeter. E D . i.) Briefly explain why this is the case, ii) Given that this is true would a photon of wavelength 1300 nm cause a current to be measured)...
Consider a photoelectric effect experiment. Calculate the minimum photon energy needed to produce photoelectrons for the...
Consider a photoelectric effect experiment. Calculate the minimum photon energy needed to produce photoelectrons for the following metals: Sodium Aluminum Platinum For the photon energies you calculated in problem #1, calculate the wavelength and frequency for each. In what part of the electromagnetic spectrum do these photons belong? Calculate the radii and energies of the first three allowed orbits for the Bohr Model of the hydrogen atom in both joules and electron-volts. Show your work. Calculate the energies of photons...
Questiond 9,11 and 12. how would you aplroach these X9 Identify the phenomena that suggest EMR must...
Questiond 9,11 and 12. how would you aplroach
these
X9 Identify the phenomena that suggest EMR must be treated as a particle. photoelectric effect, Compton Effect, diffraction b. interference, photoelectric effect, diffraction c. photoelectric effect, Compton Effect diffraction, interference, refraction d. 10. Zinc has a work function of 40 eV and is used in a photoelectric cell with light of an energy of 19 eV per photon. Determine the maximum kinetic energy of photoelectrons leaving the cell a. 11 eV 6...
Course Contents HOMEWORK Set 9 ( due Weds 11 ... Photoelectric effect (2) • Timer Notes...
Course Contents HOMEWORK Set 9 ( due Weds 11 ... Photoelectric effect (2) • Timer Notes Evaluate Feedback The work function of a certain metal is Q = 2.95 eV. Determine the minimum frequency of light fo for which photoelectrons are emitte from the metal. (Planck's constant is: h = 4.1357x10-15 eVs.) Submit Answer Tries 0/20 Determine the corresponding wavelength of light. (Possibly useful constant: hc - 1240 eVnm.) Submit Answer Tries 0/20 Calculate the kinetic energy of the emitted...
Question 8 (15 points) Part a, b, and c use photons with a wavelength of 102.77nm....
Question 8 (15 points) Part a, b, and c use photons with a wavelength of 102.77nm. Photons fall on a photoelectric surface and photoelectrons with a maximum kinetic energy of 5 eV are being emitted. a) Determine the work function. (5 points) b) Determine the cut-off frequency of the surface. (5 points) c) Assume the photon is being emitted from a hydrogen atom. Find the initial state of the electron if the atom ends up in the ground state after...
The photoelectric effect
Electrons are emitted from the surface of a metal when it's exposed to light. This is called the photoelectric effect. Each metal has a certain threshold frequency oflight, below which nothing happens. Right at this threshold frequency, an electron is emitted. Above this frequency, the electron is emitted and the extra energy istransferred to the electron.The equation for this phenomenon is KE=hv-hv0 where KE is the kinetic energy of the emitted electron, h=6.63x10^-34 J.s is Planck's constant, v is the...
1.(16 pts) (1) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09 x 1015 1/s before it can eject an electron from the surface of the metal. Calculate the work function of Molydenum in Joules. (ii) What is the wavelength, in nm, of the photon associated with the work function? (iii) If molybdenum is irradiated with light of wavelength 120 nm, what is the maximum kinetic energy, in Joules, of the electron emitted? Recall the Einstein...
1.(16 pts) (i) In a photoelectric experiment, Molybdenum must absorb radiation having a frequency of 1.09 x105 1/s before it can eject an electron from the surface of the metal. Calculate the work function of Molydenum in Joules (ii) What is the wavelength, in nm, of the photon associated with the work function? (iii) If molybdenum is irradiated with light of wavelength 120 nm, what is the maximum kinetic energy, in Joules, of the electron emitted? Recall the Einstein equation...
Question (2) Choose the correct answer. Justify your answer In a photoelectric experiment, the stopping potential is 1 V, the work function is 2 eV. The intensity of the incident light is doubled and the frequency reduces to half its initial value. Answer the following two questions 1) In this new situation, the work function of the cathode is: a) 4 eV b) 2 eV l eV d) 6 eV e) 3 eV In this new situation, the saturation current:...
a and c
following questions concerning this experime fem 3 Consider the photoelectric effect experiment she men shown below. Answer the ev ( I n coming this experiment. The metal plate has a workfunction of Vacuum tube Photon Electron Metal Plate of a current to be measured by the ammeter. E D . i.) Briefly explain why this is the case, ii) Given that this is true would a photon of wavelength 1300 nm cause a current to be measured)...
Consider a photoelectric effect experiment. Calculate the minimum photon energy needed to produce photoelectrons for the following metals: Sodium Aluminum Platinum For the photon energies you calculated in problem #1, calculate the wavelength and frequency for each. In what part of the electromagnetic spectrum do these photons belong? Calculate the radii and energies of the first three allowed orbits for the Bohr Model of the hydrogen atom in both joules and electron-volts. Show your work. Calculate the energies of photons...
Questiond 9,11 and 12. how would you aplroach
these
X9 Identify the phenomena that suggest EMR must be treated as a particle. photoelectric effect, Compton Effect, diffraction b. interference, photoelectric effect, diffraction c. photoelectric effect, Compton Effect diffraction, interference, refraction d. 10. Zinc has a work function of 40 eV and is used in a photoelectric cell with light of an energy of 19 eV per photon. Determine the maximum kinetic energy of photoelectrons leaving the cell a. 11 eV 6...
Course Contents HOMEWORK Set 9 ( due Weds 11 ... Photoelectric effect (2) • Timer Notes Evaluate Feedback The work function of a certain metal is Q = 2.95 eV. Determine the minimum frequency of light fo for which photoelectrons are emitte from the metal. (Planck's constant is: h = 4.1357x10-15 eVs.) Submit Answer Tries 0/20 Determine the corresponding wavelength of light. (Possibly useful constant: hc - 1240 eVnm.) Submit Answer Tries 0/20 Calculate the kinetic energy of the emitted...
Question 8 (15 points) Part a, b, and c use photons with a wavelength of 102.77nm. Photons fall on a photoelectric surface and photoelectrons with a maximum kinetic energy of 5 eV are being emitted. a) Determine the work function. (5 points) b) Determine the cut-off frequency of the surface. (5 points) c) Assume the photon is being emitted from a hydrogen atom. Find the initial state of the electron if the atom ends up in the ground state after...
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