A metal having a work function 8 eV is illuminated with monochromatic light whose photon energy...
A photocathode having a work function of 3.4 eV is illuminated with monochromatic electromagnetic radiation whose photon energy is 4.6 eV. What is the threshold (cutoff) frequency for photoelectron production? (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ∙ s) A.9.1 × 1014 Hz B.1.1 × 1015 Hz C.1.0 × 1015 Hz D.2.9 × 1014 Hz 8.2 × 1014 Hz
please show all work 4) A metal having a work function of 2.5 eV is illuminated with white light that has a continuous wavelength band from 400 nm to 700 nm. For which one of the following ranges of the wavelength band in this white light are photoelectrons NOT produced? (h-6.626 x 10-34 J s, c 3.00 x 108 m/s. 1 eV- 1.60 x 10-19 J) Aner Answer oibn MAW od voa 5) A metal having a work function of...
A surface whose work function is 1.8 eV is illuminated by a light whose wavelength is 167 nm. What is the maximum velocity of a photoelectron emitted from the surface? The speed of light is 3 × 108 m/s and Planck’s constant is 6.63 × 10−34 J · s.
3. A photon with a frequency of 5.00 E14 Hz strikes a metal surface whose work function is 1.62 eV. Calculate the a) energy of the incoming photon, the b) maximum kinetic energy of the ejected photoelectron, and the c) threshold frequency (3 points). alculate the many energy of the incoming photom
A 19.2 eV photon is incident on a metal surface with a work function of 2.20 eV. What is the maximum kinetic energy of the emitted photoelectron in eV.? Use 3 s.f. in your calculation.
The threshold energy (work function) of copper is 4.7 eV. What is the kinetic energy of an electron ejected by a photon with a wavelength of 210 nm? [1 eV = 1.6 x 10–19 J]
When a metal is illuminated by light, photoelectrons are observed provided that the wavelength of the light is less than 606 nm. What is the metal's work function? (c - 3.00 x 10 m/s, h = 6.626 x 10-34 J·s, 1 eV = 1.60 x 10-19)) 25 ev 2.2 eV 24ev 21ev
hf = + (1/2) mv2 and hf = + eVs work fucntion e = 1.60 x 10-19 C, h = 6.63 x 10-34 J s, m- mass of electron = 9.11 x 10-31 kg 1. The work function for lithium is 4.6 x 10-19 J. (a) Calculate the lowest frequency of light that will cause photoelectric emission. (b) What is the maximum energy of the electrons emitted when a light of 7.3 x 1014 Hz is...
The work function of potassium metal is 2.30 eV. Monochromatic light is shined on its surface, and photoelectrons with a maximum speed of 7.50E5 m/s are ejected. What is the wavelength of the light?
The work function of potassium metal is 2.30 eV. Monochromatic light is shined on its surface, and photoelectrons with a maximum speed of 7.50E5 m/s are ejected. What is the wavelength of the light?