Question

a) A photon of wavelength 43 nm is incident upon a metal in a
photoelectric apparatus. A stopping voltage of 21 V was obtained.
What is the threshold frequency of the metal? (format of a.b x
10^{cd}Hz)

b) Light with a frequency of 5.00 x 10^{14} Hz
illuminates a photoelectric surface that has a work function of
2.10 x 10^{-19} J. What is the maximum kinetic energy of
the emitted photoelectrons? (format of a.bc x 10^{-de} J
)

c) Light with a wavelength of 530 nm falls on a photoelectric surface that has a work function of 1.70 eV. What is the maximum kinetic energy (in eV) of any emitted photoelectrons? (3 digit answer)

d) Electrons are ejected from a photoelectric cell with a maximum kinetic energy of 1.20 eV. If the incident light has a wavelength of 410 nm, what is the work function (in eV) of the cell?(3 digit answer)

e) Electrons are ejected from a photoelectric surface with a
maximum kinetic energy of 2.9 eV. If the photons of incident light
of energy of 3.45 eV, what is the minimum frequency needed to cause
photoelectron emission? (format of a.b x 10^{cd}
Hz)

Answer #1

a) A photoelectric surface has a work function of 2.75 eV. What
is the minimum frequency of light that will cause photoelectron
emission from this surface ? answer in the format of a.bc x
10de Hz
b) A photoelectric cell is illuminated with white light
(wavelengths from 400 nm to 700 nm). What is the maximum kinetic
energy (in eV) of the electrons emitted by this surface if its work
function is 2.30 eV ? 4 digit answer

a) A photoelectric surface has a work function of 3.30 x 10-19
J. What is the threshold frequency of this surface? (format of a.bc
x 10de Hz)
b) What is the stopping voltage of an electron that has 5.40 x
10-19 J of kinetic energy? (3 digit answer)
c) A photoelectric surface requires a light of maximum
wavelength of 675 nm to cause electron emission. What is the work
function (in eV) of this surface? (3 digit answer)
d) A...

Light of wavelength 235 nm is incident on Magnesium in a
photoelectric effect experiment. The work function of Magnesium is
3.68 eV.
(a) What is the maximum kinetic energy of the emitted electrons,
in eV?
(b)What is the maximum velocity of the emitted electrons, in
m/s?
(c) What is the stopping potential, in Volts, that results in no
collected photoelectrons?
(d) Light of wavelength 235 nm is now incident on lead (work
function 5.40 eV). What is the maximum kinetic...

a) What is the energy of a photon (in eV) that has a wavelength
of 466 nm? (3 digit answer)
b) What is the energy (in eV) of a photon that has a wavelength
of 460 nm?
c) What is the wavelength of a photon that has 2.1 eV of kinetic
energy? (format of a.b x 10-c m )
d) a photoelectric surface has a work function of 2.00 eV. What
is the threshold frequency of this surface? (format of
a.bc...

In photoelectric effect, light photon is allowed to fall on a
metal surface and a photoelectron is ejected with kinetic energy
2.6 eV. If the threshold frequency f0 = 2 x 10^14
Hz then calculate the frequency and energy of incident
photon.

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...

Light of wavelength 342 nm shines on a metal surface and the
stopping potential V0 in a photoelectric experiment is observed to
be 0.850 V.
a) What is the work function φ of the metal? (eV)
b) What is the maximum kinetic energy of the ejected electrons
(in Joules)?
c) What is the longest wavelength light that will still allow
electrons to escape the metal?(nm)

The work function for copper is 4.5 eV.
(a) Find the threshold frequency and wavelength for the
photoelectric effect to occur when monochromatic electromagnetic
radiation is incident on the surface of a sample of copper.
Hz
nm
(b) Find the maximum kinetic energy of the electrons if the
wavelength of the incident light is 190 nm.
eV
(c) Find the maximum kinetic energy of the electrons if the
wavelength of the incident light is 240 nm.
eV

2a) When a metal surface is illuminated by light of wavelength
310 nm, the
measured maximum kinetic energy of the emitted electrons is 0.50
eV. Calculate the
metal plate’s work function φ in units of eV.
b) In the rest frame of an ejected electron from the photoelectric
experiment in part a),
an incident γ-ray with an energy of 0.25 MeV interacts with the
electron. Following
the collision, the γ-ray has a final energy of 0.1 MeV. Calculate
the angle...

The work function for gold is 5.01 eV.
(a) Find the threshold frequency and wavelength for the
photoelectric effect to occur when monochromatic electromagnetic
radiation is incident on the surface of a sample of gold. In Hz and
nm
(b) Find the maximum kinetic energy of the electrons if the
wavelength of the incident light is 160 nm.in eV (
c) Find the maximum kinetic energy of the electrons if the
wavelength of the incident light is 220 nm. In...

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