Question

What is the maximum kinetic energy in eV of electrons ejected
from sodium metal by 2.3 x 10^{2}-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.

Answer #1

is it ok

Maximum kinetic energy & he = Sected e- with radiation Ex a he - GGX10-34 2 and from sodium metal - www. maimude our com x 2.3x102x10-g Ex a ol 60 37x10-19 jule Ek = d.6087 x 10 19 ore 16x10ng en Ex - 5.38 en

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...

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
4f is shined on the same metal, electrons
of maximum energy 15.65 eV are ejected from the metal.
Question: What is the work function of
the metal?

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?

Electrons are ejected from sodium metal by any light that has a
wavelength shorter than 544 nm. What is the kinetic energy of an
electron (in J) that is ejected from sodium by light with a
wavelength of 385 nm?

What is the maximum kinetic energy of an ejected electron if
magnesium metal is irradiated with 294 nm light? The threshold wave
length for a magnesium metal surface is 339nm.

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?

What would be the maximum speed of the electrons ejected from a metal plate whose extraction work is 9 eV if it were lit by a light having a wavelength of 100 nm?

Light with wavelegth 400 nanometers strikes a metal surface such
that electrons are ejected with a maximum kinetic energy 2.13 x
10-19 Joules. Calculate the work function of this metal
in electron volts.
2.0 eV
1.7 eV
not enough information
2.8 eV
3.3 eV

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.

Do all electrons ejected
from the metal surface have the same kinetic energy? Is this
important for the interpretation of this lab?

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