In photon picture of light, intensity of radiation is defined as the energy transferred to a surfac unit area per unit time by the photons striking on the surface. Its SI unit is watt/m² (W m²).
Class 12 Physics
Chapter 11 Dual Nature of Radiation and Matter Session 2024-2025.
Define intensity of radiation in photon picture of light. Write its SI unit.
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In the photon picture of light, the intensity of radiation is defined as the energy delivered per unit area per unit time by the photons. It is proportional to the number of photons striking a surface per second. Its SI unit is Watt per square meter (W/m²).
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