Photoelectric effect occurs when electromagnetic radiation above the threshold frequency of the given metallic surface, strikes the surface and releases electrons from it. This happens because light is made of massless particles called photons, which possess a certain amount of energy. When these photons strike the surface, they knock electrons off it; we call these photoelectron.

Just because a light ray has a high intensity doesn't mean that it will cause the photoelectric effect. It can only happen if the frequency of the light rays is equal to or greater than a given value—known as the threshold frequency—of the metal. In this video, we have explained the photoelectric effect, threshold frequency and the work function in simple words

Table of Content
Introduction: The Photoelectric Effect 0:00
Factors Influencing Photoelectron Emission: Intensity and Frequency 1:11
Work Function and Its Role in Photoelectron Emission 1:45
Historical Evolution: Becquerel to Einstein's Nobel Triumph 2:29
Solar Power Revolution: Photoelectric Effect in Photovoltaic Cells 2:49
Beyond Solar Power: Diverse Technological Applications 3:40
Conclusion: The Quantum Elegance of the Photoelectric Effect 4:06

#PhotoelectricEffect #RenewableEnergy #solarenergy

References:
https://ui.adsabs.harvard.edu/abs/200...
https://science.nasa.gov/learn/basics...
http://hyperphysics.phy-astr.gsu.edu/...

Original Article Link: https://www.scienceabc.com/pure-scien...

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