Question

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 maximum kinetic
energy of the photoelectrons now.

_______ eV

c) Calculate the wavelength, in nanometers, of a 6.40 eV
photon.

_______ nm

Answer #1

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) 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
10cdHz)
b) Light with a frequency of 5.00 x 1014 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...

Consider a beam of light with a wavelength λ = 403-nm incident
onto a metal surface, which can be Li, Be or Hg. The work functions
of these metals are 2.30-eV, 3.90-eV and 4.50-eV respectively. For
the metal that exhibits the photoelectric effect find the maximum
kinetic energy of the photoelectrons.

In a photoelectric experiment using a clean metal surface, the
maximum energy of the emitted photons was measured for a number of
different incident frequencies, with the following results.
Frequency (1014 Hz)
Energy (eV)
11.8
2.61
10.6
2.17
9.9
1.89
9.1
1.48
8.2
1.07
6.9
0.48
Plot the graph of these results and find each of the
following.
(a) Planck's constant
(b) the cutoff frequency (Hz)
(c) the work function (eV)

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

A) Within a photoelectric effect experiment, light shines on the
surface of a metal plate and the stopping voltage is
measured.
a) If the light intensity is decreased, what happens to the
stopping voltage?
decreases
increases
stays the same
not enough information
b) If the light intensity is decreased, what happens to the number
of electrons emitted?
decreases
increases
stays the same
not enough information
c) If the light wavelength is decreased, what happens to the KE of
the emitted...

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...

1. Calculate photoelectric current when a UV radiation (190 nm)
with 1.56 x 104 µW striking on a metal surface.
2. What is the power of incident photon of wavelength 400 nm
light falling on a metal surface producing 0.48 µA current,
assuming 100 % of the incident photon produces photoelectrons?

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.

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...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 9 minutes ago

asked 9 minutes ago

asked 9 minutes ago

asked 13 minutes ago

asked 19 minutes ago

asked 27 minutes ago

asked 39 minutes ago

asked 50 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago