Question

When light of frequency ** f** is shined on
a given metal, electrons of maximum kinetic energy of 3.25 eV are
ejected from the metal. When light of frequency

* Question:* What is the work function of
the metal?

Answer #1

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comments.**

In a photoelectric e↵ect experiment, the maximum kinetic energy
of electrons ejected from a cesium metal plate is found to be
0.57eV when the plate is illuminated with 500 nm light.
(a) Given what we know about the relation of wavelength and
energy, how much energy does a single photon of 500 nm light
have?
(b) Given the results of this experiment, how much energy must
the electron have used to break free of the atom?
(c) When the same...

The maximum kinetic energy of the emitted electrons is found to
be 1.255 eV when a metal surface is illuminated by light with a
wavelength of 400 nm. When the same metal surface is illuminated by
light with a different wavelength, the maximum kinetic energy of
the emitted electrons is found to be 0.634 eV. What is the
wavelength of this light in nm?

When a metal was exposed to one photon of light at a frequency
of 3.36x10^15s^-1, one electron was emitted with kinetic energy of
4.00x10^-19J. Calculate the work function of this metal in J (per
photon). And what is the maximum number of electrons that could be
ejected from this metal by a burst of photon (at the same other
frequency) with a total energy of 7.27x10^-7J?

Light with a frequency of 3.70 × 1015 Hz strikes a metal surface
and ejects electrons that have a maximum kinetic energy of 5.4 eV.
What is the work function of the metal?

Light with a frequency of 3.22 × 1015 Hz strikes a
metal surface and ejects electrons that have a maximum kinetic
energy of 6.7 eV. What is the work function of the metal?

The minimum frequency of light
needed to eject electrons from a metal is called the threshold
frequency, ν0. Find the minimum energy needed to eject electrons
from a metal with a threshold frequency of 3.35 × 1014
s–1.
With what maximum kinetic energy will electrons be ejected when
this metal is exposed to light with a wavelength of λ = 265 nm?

The minimum frequency of light needed to eject electrons from a
metal is called the threshold frequency, ν0. Find the minimum
energy needed to eject electrons from a metal with a threshold
frequency of 2.05 × 1014 s–1.
With what maximum kinetic energy will electrons be ejected when
this metal is exposed to light with a wavelength of λ = 265 nm?

When a metal was exposed to one photon of light at a frequency
of 4.55× 1015 s–1, one electron was emitted with a kinetic energy
of 4.10× 10–19 J. Calculate the work function of this metal. What
is the maximum number of electrons that could be ejected from this
metal by a burst of photons (at some other frequency) with a total
energy of 5.11× 10–7 J?

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) Light of frequency 9.13 x 10^14 s-1 shines on the surface of
a certain metal, Metal X. if the ejected electrons have a velocity
of 6.13x10^5 m/s, what is the work function (binding energy) of
Metal X?
B) What is the longest wavelength of light (in nm) that can be
used to eject electrons from the surface of Metal X?
C) A different metal, Metal Y, has smaller binding energy. If
the same frequency of light from Part A...

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