Answered: 12. [Essay] The work function for zinc… | bartleby

Related questions

Question

12. [Essay] The work function for zinc is
4.31 eV. (a) What is the lowest frequency of
light incident on zinc that releases
photoelectrons from its surface? (b) If
photons of energy 5.50 eV are incident on
zinc, what is the maximum kinetic energy of
the ejected photoelectrons?

Expert Solution

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

You set up a photoelectric experiment with an unknown metal to eject electrons. You use light of wavelength λ = 670 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 = 310 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. J c) What is the stopping voltage for an electron with the kinetic energy you just found? V
The photoelectric current in a photoelectric cell can be reduced to zero by a stopping potential of 1.8 volt. Monochromatic light of wavelength 2200 A is incident on the cathode. Find the maximum kinetic energy of the photoelectrons in joules. [Charge on electron = 1.6 × 10-¹9 Cl
42 If frequency of light used in photoelectric effect is 4.5x10 ^14 Hz and K.E of ejected electrons is 1.20 e V then work function of the metal will be * 6.6 e V 1.90 e V 0.66 e V O 2.54 e V
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?
Tantalum has a work function of 4.2 eV. The most energetic photoelectron has KE of 2.12 eV. What is the wavelength of the incoming photons? a) 586 nm b) 197 nm c) 296 nm d) none of these.
9. Considering the photoelectric effect; a) If a material has a cutoff wavelength of 780 nm what is the work function of the material? b) What is the maximum speed of liberated electrons when light with a wavelength of 410 nm is used to illuminate the material? If a liberated electron has 3.2349 eV of kinetic energy and it was a photon emitted from a hydrogen atom transition that liberated it, what energy level transition occurred? State both the initial and final energy level.
9. Considering the photoelectric effect; a) If a material has a cutoff wavelength of 780 nm what is the work function of the material? b) What is the maximum speed of liberated electrons when light with a wavelength of 410 nm is used to illuminate the material? c) If a liberated electron has 3.2349 eV of kinetic energy and it was a photon emitted from a hydrogen atom transition that liberated it, what energy level transition occurred? State both the initial and final energy level.
4. If the incident photon has energy E (or hv), what is the maximum possible kinetic energy imparted to the scattered electron? At what angle o does this electron scatter?