Question

Ultraviolet light is incident normally on the surface of a certain substance. The work function of the electrons in this substance is 3.44 eV. The incident light has an intensity of 0.055 W/m2 . The electrons are photoelectrically emitted with a maximum speed of 4.2 × 105 m/s. a. Find the work function in units of Joules. b. What is the kinetic energy of each electron (in Joules)? c. What is the energy of the incident (incoming) photons?

Name: ultraviolet light is incident normally on the surface of a certain substance the work function of the electrons in this substance is 344 ev the incident light has an intensity of 0055 wm2 th 11216
Uploaded: 2022-07-10T21:46:19-08:00
Duration: 3 min 17 s
Channel: Nishant Kumar
Description: ultraviolet light is incident normally on the surface of a certain substance the work function of the electrons in this substance is 344 ev the incident light has an intensity of 0055 wm2 th 11216

          Ultraviolet light is incident normally on the surface of a
certain substance. The work function of the electrons in this
substance is 3.44 eV. The incident light has an intensity of 0.055
W/m2 . The electrons are photoelectrically emitted with a maximum
speed of 4.2 × 105 m/s.
a. Find the work function in units of Joules.
b. What is the kinetic energy of each electron (in Joules)?
c. What is the energy of the incident (incoming) photons?

Added by Renee W.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Nishant Kumar

07/10/2022

Step 1

Given: Work function = 3.44 eV 1 eV = 1.6 x 10^-19 J Work function in joules = 3.44 eV * 1.6 x 10^-19 J/eV ** Show more…

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Ultraviolet light is incident normally on the surface of a certain substance. The work function of the electrons in this substance is 3.44 eV. The incident light has an intensity of 0.055 W/m2 . The electrons are photoelectrically emitted with a maximum speed of 4.2 × 105 m/s. a. Find the work function in units of Joules. b. What is the kinetic energy of each electron (in Joules)? c. What is the energy of the incident (incoming) photons?