Photoelectric Effect, Threshold Frequency etc.

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SUMMARY

The discussion centers on calculating key parameters related to the photoelectric effect using light of intensity 1.5 x 10-2 W/m2 and wavelength 250 x 10-9 m incident on an iron surface. The threshold frequency for iron is established at 1.1 x 1015 Hz. Key calculations include determining the intensity of light available for the photoelectric effect, the number of electrons emitted per second, the work function in electron volts for iron, and the stopping potential for the radiation. Participants are encouraged to show their working and engage with the problem-solving process.

PREREQUISITES
  • Understanding of the photoelectric effect and its principles
  • Familiarity with the concept of threshold frequency
  • Basic knowledge of intensity calculations in physics
  • Ability to perform calculations involving work function and stopping potential
NEXT STEPS
  • Calculate the effective intensity of light available for the photoelectric effect after accounting for reflection
  • Determine the number of emitted electrons per second using the photoelectric equation
  • Research the work function of iron and its implications in photoelectric experiments
  • Explore the concept of stopping potential and its calculation in photoelectric experiments
USEFUL FOR

Students studying physics, particularly those focusing on electromagnetism and quantum mechanics, as well as educators looking to enhance their understanding of the photoelectric effect and its applications.

Andresx90
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Homework Statement


Light of intensity 1.5 x 10 (x)-2 Wm/2 and wavelength 250 x 10 (x)-9m is incident on an iron surface of area 1 x 10 (x) -4 m2. The iron surface reflects 95% of the light. The threshold frequency for iron is 1.1 x 10x15 Hz.
Calculate:
1) The intensity of light available for the photoelectric effect
2) The number of electrons emitted per second
3) The work function in electron volts for iron
4) The stopping potential for this radiation

Could someone answer this question for me showing working used as well.

(x) in this instance means to the power of.



Homework Equations





The Attempt at a Solution



1) 95% of the light intensity already given (no calculator)
 
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