We consider the radition emitted by the human body which of the following statements is true?

Options

A. The radiation is emitted during the summers and absorbed during the winters
B. The radiation emitted lies in the ultraviolet region and hence is not visible
C. The radiation emitted is in the infrared ragion
D. The ratiation is emitted only during the day

Answer

To determine which statement about the radiation emitted by the human body is true, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Radiation Emission**:
- All objects, including the human body, emit radiation due to their temperature. This emission occurs continuously, regardless of the season or time of day.

2. **Analyzing Each Option**:
- **Option A**: "The radiation is emitted during summer and observed during winter."
- This statement is incorrect. Radiation is emitted at all times, not just in summer or winter.

- **Option B**: "The radiation emitted lies in the ultraviolet region and hence is not visible."
- This statement is also incorrect. While some radiation can be in the ultraviolet region, the majority of radiation emitted by the human body is in the infrared region, which is not visible to the naked eye.

- **Option C**: "The radiation emitted is in the infrared region."
- This statement is correct. The human body emits radiation primarily in the infrared region due to its temperature.

- **Option D**: "The radiation is emitted during the day."
- This statement is incorrect. Radiation is emitted both during the day and night.

3. **Conclusion**:
- The correct statement is **Option C**: "The radiation emitted is in the infrared region." This is because all objects emit radiation based on their temperature, and for the human body, this emission predominantly occurs in the infrared spectrum.

### Final Answer:
The correct option is **C**: The radiation emitted is in the infrared region.

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