A rod has a work of 1.72 eV. What is the light wavelength required to just knock out electrons?

Q: Ultraviolet light is incident upon a metal, ejecting photoelectrons. The wavelength of the light is…

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Q: a) What is the maximum kinetic energy and speed of an electron ejected from a Na surface, in a…

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Q: beam of electrons is accelerated across a potential of 14.40 kV before passing through two slits.…

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Q: What is the maximum energy in electron volts of the photos?

A: Here the energy =charge of electrons × voltage it passes through ANS: so the maximum energy will be…

Q: To resolve an object in an electron microscope, the wavelength of the electrons must be close to the…

A: The question is asking us to determine the kinetic energy of an electron in an electron microscope…

Q: A strip of gold with a work function of 5.1eV is illuminated by a 1.57 μm green light. Calculate the…

A: The given values are, ω0=5.1 eVλ=1.57 μm=1.57×10-6 m

Q: You have a collection of identical atoms; each one has allowed energy levels at 0.5eV, 3.4eV, 3.7eV,…

A: The wavelength of visible light ranges from 400 nanometers to 700 nanometers, depending on the…

Q: Potassium and gold cathodes are used in a photoelectric-effect expériment. For each cathode, find:…

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Q: A certain photoelectric devise is sensitive wavelengths up to 940 nm. a. What is the frequency…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: a. An electron is found to a wavelength of A = 0.65 nm. What is the velocity of the electron? m/s b.…

A: (a)   Using de-Broglie wavelength equation:                          λ=hmvv=hmλ where,…

Q: The uncertainty in position of an electron is 5.15 x 10-10 m. Find the minimum uncertainty in the…

A: The uncertainity in position and momentum of the particles are related as ∆x.∆P≥h4πWhere ∆x…

Q: The mass of an electron is about 9.11x10^-31 kg.  What is the de Broglie wavlength of an electron…

A: Given data:  The mass of an electron (m) = 9.11×10-31 kg Speed (v) = 0.01 m/s Required: The de…

Q: An electron is in the n = 5 level of ionized helium. (a) Find the longest wavelength that is emitted…

A: The given data we have: Th element is helium so the value of Z will be: 2 initial level of the…

Q: The allowed energies of a quantum system are 0.0 eV, 6.0 eV, and 9.5 eV What wavelengths appear in…

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Q: Comment Edit Page Protect Tools 1. The photoelectric threshold wavelength of a tungsten surface is…

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Q: An object is placed 15 cm in front of a converging lens with a focal length of 10 cm. Answer the…

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Q: A particle A of mass 'm' and charge 'q' is accelerated by a potential difference of 50 V. Another…

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Q: An electron moving around single proton in an orbit charactarized by n = 4. How many of the…

A: Given:-  n= 4

Q: Electrons with a speed of 2.0 x 106 m/s pass through a double-slit apparatus. Interference fringes…

A: (a) The wave length associated with the motion of electron is given by, λe=hmeν Now as we know that…

Q: The allowed energies of a quantum system are 1.0 eV, 2.0 eV, 4.0 eV, and 7.0 eV. What wavelengths…

A: Write the formula for the energy associated with a quantum state.

Q: A metal has a work function φ = 3.68eV. What is the maximum wavelength with which the photoelectric…

A: In the photo electric experiment it was observed that a photon with sufficient energy could be able…

Q: If a photon of wavelength 350 nm is just enough to free an electron from a material what is the work…

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Q: Rank the following lasers according to the energy per photon they provide, from least to greatest:…

A: The energy of the photon having frequency ν is given using the following relation. This expression…

Q: Electrons striking the back of a conventional TV screen travel at a speed of about 1.5 x 107 m/s.…

A: Formula

Compton effect

The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.

Recoil Velocity

The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.