Question

The maximum energy of photoelectrons from aluminum is 2.3 eV for radiation of 200 nm and 0.90 eV for radiation of 258 nm. Use these data to calculate Planck’s constant and the work function of aluminum.

Answer #1

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Photoelectric effect:
The maximum energy of photoelectrons from the aluminum is 2.3eV
for radiation of 200nm and 0.90eV for radiation of 258nm.
(a) Calculate Planck’s constant
(b) Calculate the work function of aluminum.
(c) If the light wavelength of 330nm is irradiated on the aluminum,
what would happen? Explain the answer with the meaning of the
photoelectric effect.

The work function for aluminum is 4.2 eV. (a) What is the cutoff
frequency of light
incident on an aluminum target that releases photoelectrons from
its surface? (b) Find the
corresponding cutoff wavelength. (c) If photons of energy 5.0 eV
are incident on an
aluminum target what is the maximum kinetic energy of the ejected
photoelectrons? (d)
what is the maximum velocity of a photoelectron traveling from the
anode to the cathode
of a photocell? (d) If a blue beam...

The work function for aluminum is 4.2 eV. (a) What is the cutoff
frequency of light
incident on an aluminum target that releases photoelectrons from
its surface? (b) Find the
corresponding cutoff wavelength. (c) If photons of energy 5.5 eV
are incident on an
aluminum target what is the maximum kinetic energy of the ejected
photoelectrons? (d)
what is the maximum velocity of a photoelectron traveling from the
anode to the cathode
of a photocell? (d) If a red laser...

What is the maximum kinetic energy in eV of electrons ejected
from sodium metal by 2.3 x 102-nm EM radiation, given
that the binding energy is 2.28 eV? Your answer should be a number
with two decimal places, do not include unit.

a)
In a particular photoelectric effect experiment, photons with an
energy of 5.10 eV are incident on a metal surface, producing
photoelectrons with a maximum kinetic energy of 3.20 eV.
Calculate the work function of the metal.
_______ eV
b) In a particular photoelectric effect experiment, photons with
an energy of 5.10 eV are incident on a metal surface, producing
photoelectrons with a maximum kinetic energy of 3.20 eV. The photon
energy is then adjusted to 6.40 eV. Calculate the...

A metal surface has a work function of 3.18 eV. Determine
whether photoelectrons are ejected or not and if so, calculate
their maximum kinetic energy, when the surface is illuminated by
light of wavelength of
(a) 310 nm and (b) 460 nm.

Monochromatic light from laser shines onto an aluminium surface
and produces photoelectrons with maximum kinetic energy KEmax =
1.02 eV. What is the wavelength of the laser light? What is the
maximum velocity of the photoelectrons? Assume a work function of
4.06 eV for aluminium.

Photoelectrons from a material whose work function is 2.29 eV
are ejected by 487 nm photons. Once ejected, how long does it take
these electrons (in ns) to travel 2.35 cm to a detection
device?

UV radiation having a wavelength of 125 nm falls on gold metal,
to which electrons are bound by 4.82 eV. What is the maximum
kinetic energy of the ejected photoelectrons?

1. Light of wavelength 401 nm incident on a certain metal
produces photoelectrons with a maximum kinetic energy of 1.78 eV.
What is the maximum wavelength of light capable of producing
photoelectrons for this metal?
2. Electrons in an electron microscope have been accelerated
through a potential difference of 1250 V. How large is their de
Brogile wavelength?

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