a) The work functions for sliver, cesium and nickel are 4.26eV, 2.14eV and 5.15eV respectively. Plot...
a) The work functions for sliver, cesium and nickel are 4.26eV, 2.14eV and 5.15eV respectively. Plot the maximum kinetic energy of the ejected photo-electrons as a function of the incident light frequency in one graph. Label clearly which curve is for which metal.
b) A green light with a wavelength of 5030 Ǻ is incident on the above metals. Find from which metal or metals photoelectrons are ejected. (hc = 12431 Ǻ·eV.)
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a) The work functions for sliver, cesium and nickel are 4.26eV,
2.14eV and 5.15eV respectively. Plot...
When light of frequency 1.30x 1015 s-1 shines on the surface of cesium metal, electrons are...
When light of frequency 1.30x 1015 s-1 shines on the surface of cesium metal, electrons are ejected with a maximum kinetic energy of 5.2x 10-19 J.Calculate the wavelength of this light in nm
The six metals have the work functions, W. Part A Rank these metals on the basis...
The six metals have the work functions, W.Part A Rank these metals on the basis of their cutoff frequency. Rank from largest to smallest. To rank items as equivalent, overlap them.Part B Rank these metals on the basis of the maximum wavelength of light needed to free electrons from their surface. Rank from largest to smallest. To rank items as equivalent, overlap them.Part C Each metal is illuminated with 400 nm (3.10 eV) light. Rank the metals on the basis of the maximum...
The six metals have the work functions W.
The six metals have the work functions W. Part ARank these metals on the basis of their cutoff frequency. Rank from largest to smallest. To rank items as equivalent, overlap them. Part BRank these metals on the basis of the maximum wavelength of light needed to free electrons from their surface. Rank from largest to smallest. To rank items as equivalent, overlap them. Part CEach metal is illuminated with 400 nm (3.10 eV) light. Rank the metals on the basis of the maximum...
The work function of a certain metal is φ = 3.05 eV. Determine the minimum frequency...
The work function of a certain metal is φ = 3.05 eV. Determine the minimum frequency of light f0 for which photoelectrons are emitted from the metal. (Planck's constant is: h = 4.1357×10-15 eVs.) Determine the corresponding wavelength of light. (Possibly useful constant: hc = 1240 eVnm.) Calculate the kinetic energy of the emitted electrons if the frequency of the photons is doubled to 2f0.
Quantum Physics - Photoelectric Effect 1 Light Light2 Photo- electrons KEL KEN-W Photoelectric Effect Lenard found...
Quantum Physics - Photoelectric Effect 1 Light Light2 Photo- electrons KEL KEN-W Photoelectric Effect Lenard found that light has to be above a certain frequency in order to observe photoelectrons The Planck constant is 6.626x10^-34 J s. The calcium metal has a work function WO = 2.71 eV, 1eV = 1.6x10^-19). (a) What is the Cutoff frequency for the calcium metal? Write the result in terms of 1014Hz. Keep 3 decimal places. Enter a number x1024Hz Submit (5 attempts remaining)...
Cesium metal is to be used as the photocathode material in a photoemissive electron tube because electrons are relative...
Cesium metal is to be used as the photocathode material in a photoemissive electron tube because electrons are relatively easily removed from a cesium surface. The work function of a clean cesium surface is 1.9 eV. What is the longest wavelength of radiation which can result in photoemission? a. b. If blue radiation of wavelength 450 nm is incident onto the Cs photocathode, what will be the kinetic energy of the photoemitted electrons in eV? What should be the voltage...
The photoelectric effect demonstrates the quantized nature of light. a) What is the kinetic energy and...
The photoelectric effect demonstrates the quantized nature of light. a) What is the kinetic energy and speed of an electron ejected from a Na surface with work function 2.28 eV when illuminated by light of wavelength i) 410 nm ii) 600 nm? b) What is the critical frequency fo of incident light below which no electrons are ejected? c) Sketch a graph of kinetic energy of the ejected electron vs. frequency of incident light for the photoelectric effect in sodium....
The work functions for several metals are shown in the table below. If 265 nm light...
The work functions for several metals are shown in the table below. If 265 nm light is incident on each of these metals, determine: which metals exhibit the photoelectric effect. Element Chemical Symbol Work Function (EV) 1 Barium Ba 2.48 2 Beryllium Be 3.92 3 Cesium Cs 1.92 4 Gold 4.82 5 Lithium Li 2.35 6 Mercury Hg 4.53 7 Nickel Ni 5.01 6 Mercury Hg 4.53 7 Nickel Ni 5.01 O All the metals listed will exhibit the photoelectric...
The work function of a certain metal is φ = 3.65 eV. Determine the minimum frequency...
The work function of a certain metal is φ = 3.65 eV. Determine the minimum frequency of light f0 for which photoelectrons are emitted from the metal. (Planck's constant is: h = 4.1357×10-15 eVs.) Tries 0/20 Determine the corresponding wavelength of light. (Possibly useful constant: hc = 1240 eVnm.) Tries 0/20 Calculate the kinetic energy of the emitted electrons if the frequency of the photons is doubled to 2f0. Tries 0/20
The work functions for several metals are shown in the table below. If 265 nm light is incident on each of these metals,...
The work functions for several metals are shown in the table below. If 265 nm light is incident on each of these metals, determine: which metals exhibit the photoelectric effect. Element Chemical Symbol Work Function (eV) 1 Barium Ba 2.48 2 Beryllium Be 3.92 3 Cesium Cs 1.92 4 Gold Au 4.82 5 Lithium Li 2.35 6 Mercury Hg 4.53 7 Nickel Ni 5.01 Group of answer choices All the metals listed will exhibit the photoelectric effect. All the metals...
Quantum Physics - Photoelectric Effect 1 Light Light2 Photo- electrons KEL KEN-W Photoelectric Effect Lenard found that light has to be above a certain frequency in order to observe photoelectrons The Planck constant is 6.626x10^-34 J s. The calcium metal has a work function WO = 2.71 eV, 1eV = 1.6x10^-19). (a) What is the Cutoff frequency for the calcium metal? Write the result in terms of 1014Hz. Keep 3 decimal places. Enter a number x1024Hz Submit (5 attempts remaining)...
Cesium metal is to be used as the photocathode material in a photoemissive electron tube because electrons are relatively easily removed from a cesium surface. The work function of a clean cesium surface is 1.9 eV. What is the longest wavelength of radiation which can result in photoemission? a. b. If blue radiation of wavelength 450 nm is incident onto the Cs photocathode, what will be the kinetic energy of the photoemitted electrons in eV? What should be the voltage...
The work functions for several metals are shown in the table below. If 265 nm light is incident on each of these metals, determine: which metals exhibit the photoelectric effect. Element Chemical Symbol Work Function (EV) 1 Barium Ba 2.48 2 Beryllium Be 3.92 3 Cesium Cs 1.92 4 Gold 4.82 5 Lithium Li 2.35 6 Mercury Hg 4.53 7 Nickel Ni 5.01 6 Mercury Hg 4.53 7 Nickel Ni 5.01 O All the metals listed will exhibit the photoelectric...
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