Which of the following scientists was the first to demonstrate the use of electromagnetic waves for communication purposes?

Options

A. HR Hertz
B. Macroni
C. J.C Maxwll
D. Henry Becquerel

Explanation

To solve the question regarding which scientist first demonstrated the use of electromagnetic waves for communication purposes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the scientist who first used electromagnetic waves for communication. This involves recognizing the contributions of various scientists in the field of electromagnetism.

2. **Review the Options**: The options provided are:
- A) H.R. Hertz
- B) Micronie
- C) G.C. Maxwell
- D) Henry Becquerel

3. **Identify Key Contributions**:
- **H.R. Hertz**: Known for his experiments that confirmed the existence of electromagnetic waves and demonstrated their transmission.
- **Micronie**: Not a recognized scientist in the context of electromagnetic waves.
- **G.C. Maxwell**: Developed the theory of electromagnetism but did not demonstrate the practical use of electromagnetic waves for communication.
- **Henry Becquerel**: Known for his work in radioactivity, not electromagnetic communication.

4. **Determine the Correct Answer**: Based on historical contributions, H.R. Hertz was the first to demonstrate the use of electromagnetic waves for communication purposes through his experiments in the late 19th century.

5. **Conclude the Answer**: Therefore, the correct answer to the question is **A) H.R. Hertz**.

### Final Answer:
The first scientist to demonstrate the use of electromagnetic waves for communication purposes was **H.R. Hertz**.

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