A laser with a power output of 2.00 mW at a wavelength of 400 nm is projected onto calcium metal. (a) How many electrons per second are ejected? (b) What power is carried away by the electrons, given that the binding energy is 2.71 eV? (c) Calculate the current of ejected electrons. (d) If the photoelectric material is electrically insulated and acts like a 2.00-pF capacitor, how long will current flow before the capacitor voltage stops it?

Q: Consider only the Lyman, Balmer and Paschen series for the energy diagram provided for an unknown…

A:

Q: The work functions for sodium and cesium are 2.28 eV and2.14 eV, respectively. For incident photons…

A: Given: The work function for sodium is 2.28 eV. The work function for cesium is 2.14 eV.

Q: If free electrons with kinetic energy 12.75 eV collide with these atoms, what photon wavelengths…

A: The expression for the energy is,

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Q: The beam emerging from a 1.5 W argon laser (l =515 nm) has a diameter d of 3.0 mm. The beam is…

A: Consider the power output of the laser be P, and the energy of a photon be E.   The rate of the…

Q: If the minimum wavelength of the X-ray photons produced by Bremsstrahlung interactions in an X-ray…

A:

Q: When a wide spectrum of light passes through hydrogengas at room temperature, absorption lines are…

A: When a wide spectrum of light passes through hydrogengas at room temperature, absorption lines are…

Q: A photon of 3.53 x 10-28 kg.m/s momentum is emittedfrom a hydrogen atom. To what spectrum series…

A: Given values: The momentum of photon, p=3.53×10-28 kg.m/s Velocity of light, c=3×108 m/s Planck's…

Q: Consider the electron of a Li2+ ion that undergoes a transition from a higher energy state n to its…

A: Threshold frequency of potassium (fo) = 5.464×1014 Hz Threshold energy = h×fowhere h is the plancks…

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A: Given,

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A: Using Rydberg’s equation,

Q: A laser with power output 2.0mW at a wavelength 400nm is projected onto a calcium metal. The binding…

A: Given information: Here, P is the power output of the laser, λ is the light’s wavelength and ϕ is…

Q: A laser emits at 424 nm in a single pulse that lasts 0.500 ms. The power of the pulse is 2.80 MW. If…

A:

Q: For a tungsten target, the electron binding energies for K- shell is 69.5 keV and that of the…

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Q: It is possible that a muon be captured by a proton to form a muonic atom. A muon is identic to an…

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Q: ht of frequency 1 × 1015 Hz illuminates a piece of cesium, and the cesium emits photoelectrons with…

A:

Q: Light of wavelength 576 nm is incident on a target metal that has a work function of 1.85 eV. What…

A: solution is given by

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Q: monochromatic light beam is incident on a barium target that has a work function of 2.50 eV. If a…

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Q: Consider the Balmer series discussed in the book (and Prof. Scherer's lecture notes), where the…

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Q: At what speed must an electron travel to have a wavelength of 13.6 pm ?

A: The expression for wavelength,

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Q: If the minimum wavelength of the Xx-ray photons produced by Bremsstrahlung interactions in an X-ray…

A: Wavelength of X - Ray = 0.02 nm  Let peak voltage = V

Q: The ground state of the an ion corresponds to the og1s orbital which is given by the expression: 1 1…

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Q: Q/ For a state of a nucleus with a definite mass (M) and not infinity around which an electron of…

A: The state of nucleus with a definite mass (M) and not infinity around which an electron of mass (m)…

Q: The work function of caesium is 2.14 eV. Find (a) the threshold frequency for caesium, and (b) the…

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Q: The x-ray spectrum is for 35.0 keV electrons striking a molybdenum (Z= 42) target. If you substitute…

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Q: What are the threshold frequencies and wavelengths for electron emission from sodium and from…

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Q: photoelectric experiment is set up with magnesium which has work function 3.68eV . (a) What is the…

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Q: When sodium is bombarded with electrons accelerated through a potential difference AV, its x-ray…

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Q: mass

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Q: The least massive particle known to exist is the electron neutrino. Though scientists once believed…

A: mass, m = 3.9 x 10-36 kg speed, v = 4.4 x 106 m/s

Q: The cutoff frequency of a specific metal is known to be 0.72x1015Hz. During a photociectric…

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Q: When electromagnetic radiation of a certain wavelength is incident on a metal whose binding energy…

A: Given value--- binding energy = 1.49 eV. kinetic energy of ejected electron = 0.669 eV. We have to…

Q: A laser with a power output of 2.15 mW at a wavelength of 384 nm is projected onto calcium metal.…

A:

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: