IGNOU MCH 20 2026 - What is the photoelectric effect? Write the equation of Einstein&rsquo

Question

What is the photoelectric effect? Write the equation of Einstein’s photoelectric law.

21 Jan 2026

Answer :

Word Count : 261

The photoelectric effect is the phenomenon in which electrons are emitted from the surface of a metal when electromagnetic radiation of sufficiently high frequency is incident on it. This effect demonstrates the particle nature of light and cannot be explained by classical wave theory. When light falls on a metallic surface, its energy is absorbed in discrete packets called photons. If the energy of an individual photon is greater than

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