monochromatic light beam is incident on a barium target that has a work function of 2.50 eV. If a potential difference of 1.00 V is required to turn back all the ejected electrons. what is the energy of incidint beam ?

Q: What is the maximum kinetic energy (in eV) of the photoelectrons when light of wavelength 260.0 nm…

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Q: What minimum frequency of light is needed to ejectelectrons from a metal whose work function is 4.8…

A: work function, W = 4.8 x10-19 J

Q: When UV light of wavelength 255 nm falls on a metalsurface, the maximum kinetic energy of emitted…

A: incident wavelength = 255 nm  Kinetic energy = 1.4 eV

Q: If the stopping potential of a metal when illuminated with a radiation of wavelength 480 nm is 1.2…

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Q: At scattering angle will incident 100-keV x-rays leave a target with an energy of 90 keV?

A: Energy of incident x-ray , E = 100 keV = 1.6 x 10-14 J  Energy of scattered x-ray , E' = 90 keV =…

Q: What is the energy of a neutron having wavelength 1000 nm ?

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Q: What minimum accelerating voltage is required to produce an x - ray with a wavelength of 70.0 pm?

A: The energy acquired by a photon when it is accelerated to potential difference ‘V’ is given by

Q: what minimum acceleration voltage would be required to produce an x-ray with a wavelength of 70.0 pm

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Q: For a given material, monochromatic light with a frequency below a minimum produces no photocurrent,…

A: Say we have a material on which monochromatic light of frequency f is incident. The energy of the…

Q: Light of wavelength 191 nm is shone on copper, which has a work function (or binding energy) of 4.94…

A: The maximum kinetic energy of the electrons can be given by Kmax=hf-ϕ Also, Kmax=12mvmax2

Q: In a particular Compton scattering experiment, it is found that the incident wavelength is shifted…

A: Given: Scattering angle, θ=130° ∆λλ=0.5 %∆λ=0.005 λ Formula: Compton Scattering experiment is used…

Q: What is the maximum kinetic energy of an emitted electron if light with a frequency of 2x1015Hz…

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Q: What is the de Broglie wavelength of a neutron (m = 1.67 x 10-27 kg) travelling at 6.5 x 104 m/s?

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Q: The work function of a surface is 5.0×10^−19 J. If light of wavelength of 300 nm is incident on the…

A: Given: The work function of the metal is 5x10-19 J. The wavelength of the light is 300 nm.

Q: A 245 W bulb produces monochromatic U-V light of frequency 1.34x1015 Hz. If the efficiency of the…

A: Power = 245 efficiency = 24% Thus , effective power = 0.24 * 245 = 58.8 W

Q: The work function for a certain metal is 4.2 eV. Will this metal give photoelectric emission for…

A: Given:  Work function, W = 4.2 eV  wavelength = 330 nm

Q: What minimum accelerating voltage would be required to produce an x-ray with a wavelength of 70.0…

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Q: Show that in an atom, the photons in a 1240 nm infrared beam possesses energies of 1.00 eV.

A: Given data: Wavelength, λ=1240 nm=1240×10-9m Known data: Planck's constant, h=4.136×10-15eV/Hz Speed…

Q: What minimum accelerating voltage would be required to produce an x-ray with a wavelength of 0.0280…

A: wavelength = 0.0280 nm = 0.28 Angstrom

Q: UV radiation having a wavelength of 120 nm falls on gold metal, to which electrons are bound by 4.82…

A: Given:  Work function, W = 4.82 eV  incident wavelength = 120 nm = 120 x 10-9 m  Plank's constant, h…

Q: X-rays with an energy of 306 keV undergo Compton scattering with a target. If the scattered X-rays…

A: Given Data: Phenomena is Compton scattering. Standard Data:

Q: What minimum accelerating voltage would be required to produce an x-ray with a wavelength of 0.0380…

A:

Q: If the cutoff frequency of the lead metal is 9000 THz and the emitted photoelectrons have kinetic…

A: cutoff frequency (f) of lead metal= 9000 THz

Q: When radiation of frequency 8 x 10^14 Hz is incident to Calcium with 4.3 x 10^-19 J work function,…

A: Given data: Frequency of radiation, ν=8×1014Hz Work function, ϕ0=4.3×10-19J

Q: What is the maximum kinetic energy of electrons knocked out of a thin copper foil by Compton…

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Q: What should be the stopping potential for photoelectrons if the target material used is Platinum and…

A: The photoelectric effect states that Ek = hf − ϕ

Q: X-rays of wavelength 0.120 nm are scattered from a block of carbon. If the scattered  radiation is…

A: Given data: Wavelength of X-ray is, λ=0.120 nm=0.120×10-9 m. Scattering angle with respect to…

Q: The work function for tungsten (W) is 4.52 eV. What is the maximum Kinetic Energy of emitted…

A: Given :The work function for tungsten (W) is 4.52 eV.wavelength λ = 200 nm

Q: At what scattering angle will incident 100 keV x-rays leave a target with an energy of 90keV?

A: Given  Initial energy of wave E=100KeV Final energy of wave E'=90KeV Mass of electron m=9.1×10-31 kg…

Q: What is the accelerating voltage of an x-ray tube that produces x rays with a shortest wavelength of…

A: The energy of the X-ray photon is given by,

Q: The work function of Potassium is 2 eV. If the surface of the metal is illuminated by a radiation of…

A: From Einstein's Photoelectric equation, maximum kinetic energy of ejected electron is given by,…

Q: Lithium has a work function of 2.51 eV. What is the maximum kinetic energy of the photoelectrons if…

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Q: In a particular photoelectric experiment, a stoppingpotential of 2.10 V is measured when ultraviolet…

A: The expression for energy of a photon in terms of its wavelength is, E=hcλ Here, h is Planck’s…

Q: Show that the cutoff wavelength (in picometers) in the continuous x-ray spectrum from any target is…

A: The maximum energy of the electrons accelerated from the x-ray spectrum is,

Q: A nickel crystal’s work function is measured to be 5.22 eV at 25°C. As the temperature increases by…

A: Given, Work function, ϕ=5.22 eV, dropped worked function, ϕ'=5.22 eV-0.050 eV=5.17 eV.

Q: The binding energies of K-shell and L-shell electrons in copper are 8.979 and 0.951 keV,…

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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 0.00220-nm photon scatters from a free electron. For what (photon) scattering angle does the…

A:

Q: Thermal neutrons are incident on a crystal whose principal Bragg plane spacing is 3.0 Å. If a…

A:

Q: The threshold wavelength for emission of electronsfrom a given surface is 340 nm. What will be the…

A: Threshold wavelength of emission: λo = 340 nm = 340 x 10-9 m Wavelength 1: λ1 = 280 nm = 280 x 10-9…