Define the term "Intensity" in photon picture of electromagnetic radiation.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Concept of Intensity**:
- Intensity in the context of electromagnetic radiation refers to the amount of energy that is transmitted through a certain area over a specific time period.

2. **Photon Picture of Electromagnetic Radiation**:
- In the photon model, electromagnetic radiation is considered to be made up of discrete packets of energy called photons. Each photon carries a specific amount of energy.

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