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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
Question
Define the term “Intensity” in photon picture of electromagnetic radiation.
✓

Answer

The intensity I, is defined as the total amount of energy falling on a given surface/ Region per unit time 't' and per unit area 'A'.
If the total energy emitted = nhν
Then, $\text{I}=\frac{\text{nhv}}{\text{At}}$

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