Which of the following electromagnetic waves is used in medicine of destroy cancer cells?

Options

A. IR-rays
B. Visible rays
C. Gamma rays
D. Ultraviolet rays

Answer

To determine which electromagnetic waves are used in medicine to destroy cancer cells, we can analyze the options based on their properties and applications.

### Step-by-Step Solution:

1. **Identify the Electromagnetic Spectrum**: The electromagnetic spectrum includes various types of waves such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Each type has different properties and applications.

2. **Understand the Medical Applications**: In medicine, different types of electromagnetic waves are used for various purposes. For example:
- **X-rays**: Commonly used for imaging and diagnostic purposes.
- **Gamma rays**: Known for their high energy and penetrating ability, making them suitable for treatment applications, particularly in oncology (cancer treatment).

3. **Evaluate the Properties of Gamma Rays**: Gamma rays have a very high frequency and energy. This allows them to penetrate tissues and cells effectively, making them capable of destroying cancer cells while minimizing damage to surrounding healthy cells.

4. **Compare with Other Waves**:
- **Ultraviolet rays** can damage cells and are not typically used for destroying cancer cells due to their potential to harm healthy tissue.
- **X-rays**, while useful in diagnostics, are not primarily used for destroying cancer cells.

5. **Conclusion**: Based on the analysis, gamma rays are the most suitable electromagnetic waves for destroying cancer cells due to their high energy and ability to target cancerous tissues effectively.

### Final Answer:
The electromagnetic wave used in medicine to destroy cancer cells is **gamma rays**.

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