Which radiations are used in treatment of muscle ache?

Options

A. Infrared
B. Ultraviolet
C. Microwave
D. X-rays

Explanation

To solve the question regarding which radiations are used in the treatment of muscle ache, we can follow these steps:

### Step 1: Understand the Question
The question asks for the type of radiation used in the treatment of muscle aches. We need to consider the properties of different types of radiation to determine which one is suitable for this purpose.

### Step 2: Analyze the Options
The options provided are:
1. Infrared
2. Ultraviolet
3. Microwave
4. X-rays

### Step 3: Evaluate Each Option
- **Infrared Radiation**: Infrared rays have longer wavelengths and are known for their heating effect. They penetrate the skin and can help in relaxing muscles and alleviating pain, making them suitable for treating muscle aches.

- **Ultraviolet Radiation**: Ultraviolet rays have shorter wavelengths and are primarily used for sterilization and in some medical treatments, but they do not have significant heating effects beneficial for muscle aches.

- **Microwave Radiation**: Microwaves are also used in some therapeutic applications, but they are not the primary choice for muscle aches compared to infrared.

- **X-rays**: X-rays are primarily used for imaging and diagnosing conditions rather than for treatment, especially for muscle aches.

### Step 4: Conclusion
Based on the analysis, infrared radiation is the most suitable option for the treatment of muscle aches due to its long wavelength and heating properties.

### Final Answer
**Infrared radiation is used in the treatment of muscle ache.**

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