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Give principle of a photocell....

Give principle of a photocell.

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### Step-by-Step Solution: 1. **Understanding the Photocell**: A photocell is a device that converts light energy into electrical energy. It operates based on the principle of the photoelectric effect. 2. **Photoelectric Effect**: The photoelectric effect is a phenomenon where electrons are emitted from a material (typically a metal) when it is exposed to light (or electromagnetic radiation) of sufficient energy. 3. **Components of a Photocell**: A typical photocell consists of two metal plates. One plate is connected to a power source and an ammeter, which measures the current produced. ...
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