Question

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.

Answer #1

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.

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 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...

Question 1: Photoelectric effect.
An aluminum plate is lit by 30 watt blue light ( = 340nm). The aluminum extraction work is 2 eV.
a. What will be the maximum speed of the ejected electrons?
b. If only 1% of the ejected electrons go to the detector, how much will it detect per second?
c. What is the stopping potential?
d. What maximum wavelength can the photoelectric effect produce on aluminum?

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.

The maximum kinetic energy of photoelectrons is 3.10 eVeV . When
the wavelength of the light is increased by 50%, the maximum energy
decreases to 1.10 eVeV .
Part A
What is the work function of the cathode?
Part B
What is the initial wavelength ?

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...

An experimental is conducted to investigate the
photoelectric effect with a Barium plate. When the wavelength of
the incident light is less than 500.0 nm the plate starts emitting
electrons.
a) what is the threshold frequency of the Barium plate?
b) what is the work function of Barium?
The wavelength of the incident light is charged to 300.0 nm.
c) what is the kinetic energy of the photoelectrons?

Utilizing the photoelectric effect, a student fund that it
required light with a maximum wavelength of 351 nm to dislodge
electrons from a polished zinc metal surface. A) What is the work
function of this metal in joules? B) what is the velocity, in
m.s-1, of the ejected electron when incident radiation of 298 nm is
used (hint: me = 9.11 x 10 -31kg ). I dont need just the answer, I
got this wrong and need to know how...

In a photoelectric-effect experiment, the stopping potentials
was measured as 1.0 V for
light of wavelength 600 nm, 2.0 V for 400 nm, and 3.0 V for
300 nm. Determine the
work function for this material and the implied value of
Planck’s constant h
(graphically)

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 7 minutes ago

asked 13 minutes ago

asked 22 minutes ago

asked 30 minutes ago

asked 58 minutes ago

asked 59 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago