What do you mean by frequency deviation ?

Explanation

### Step-by-Step Solution:

1. **Understanding Modulation**:
- Modulation is a technique used to encode information onto a carrier wave. This is necessary because low-frequency signals cannot travel long distances effectively.

2. **Carrier Wave**:
- A carrier wave is a high-frequency wave that carries the information signal. The information signal is superimposed onto this carrier wave for transmission.

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