Answered: When ultraviolet light with a… | bartleby

Related questions

Question

QUESTION 24
When ultraviolet light with a wavelength of 317 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.76 x 10-1 J. How much energy, in Joule, does an electron have to gain in
order to escape from the metal surface? Exponential format with 3 SF.

Expert Solution

Step by step

Solved in 2 steps with 6 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

If the cutoff wavelength for a particular material is 676 nm considering the photoelectric effect, what will be the maximum amount of kinetic energy obtained by a liberated electron when light with a wavelength of 403 nm is used on the material? Express your answer in electron volts (eV).
Light of constant intensity but varying wavelength was used to illuminate the cathode in a photoelectriceffect experiment. The graph shows how the stopping potential depended on the frequency of the light. What is the work function, in eV, of the cathode?
When ultraviolet light with a wavelength of 351 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.76x10-19 J. How much energy, in Joule, does an electron have to gain in order to escape from the metal surface? Exponential format with 3 SF.
Light of wavelength 350 nm falls on a potassium surface, and the photoelectrons have amaximum kinetic energy of 1.3 eV.What is the work function of potassium?The speed of light is 3 × 108 m/s and Planck’sconstant is 6.63 × 10−34 J · s.Answer in units of eV. What is the threshold frequency for potassium?Answer in units of Hz.
The mathematical equation for studying the photoelectric effect is hν = W + 1/2 meu2 where ν is the frequency of light shining on the metal; W is the energy needed to remove an electron from the metal; and me and u are the mass and speed of the ejected electron, respectively. In an experiment, a student found that a maximum wavelength of 351 nm is needed to just dislodge electrons from a metal surface. Calculate the velocity (in m/s) of an ejected electron when the student employed light with a wavelength of 283 nm.
Lithium has a work function of 2.51 eV. What is the maximum kinetic energy of the photoelectrons if 9.7 x 10¹4 Hz radiation is incident upon it?
Light with a frequency of (1.99x10^15) Hz hits a metal with a work function of (4.200x10^0) eV. Determine the maximum velocity of photoelectrons generated by this setup.
s) The cutoff frequency of a specific metal is known to be 0.72x1015Hz. During a photoelectric experiment, 3.7x102º photons with a wavelength of 167nm are striking a plate every second. What is the power of the photons and what is the maximum kinetic energy of the ejected electrons?
A) Astronomers measure the peak wavelength of a nearby star to be 410 nm. What is the star's temperature? B) How much energy does a single photon of light have at this wavelength? C) An electron bound in an unknown metal requires 1.45E-19 ] of energy under the photoelectric effect to become free of the metal. How much kinetic energy would it have if struck by the photon froft part (b)? D) What is the final speed of the elctron from part (c)?
A metal has a work function of 3.1eV and is illuminated by light of wavelength A = 320 nm. What is the maximum velocity of the photoelectrons emitted? Select one: а. 2.7 x 106 m/s b. 3.2 x 10' m/s С. 5.9 x 105 m/s O d. 5.24 x 105 m/s
You set up a photoelectric experiment with an unknown metal to eject electrons. You use light of wavelength λ = 660 nm, which just BARELY ejects electrons from the metal. Planck s constant is either h = 6.63 x 10-34 J.s or h = 4.14 x 10-15 ev.s. a) What is the binding energy of the unknown metal in eV? eV b) You change the light source to one with a wavelength of λ = 300 nm. Using the binding energy you found in the previous step, find the maximum kinetic energy of an electron that is ejected from the metal in Joules. c) What is the stopping voltage for an electron with the kinetic energy you just found? Submit Answer