Wavelength of the visible spectrum ranges from

Options

A. 120 nm to 380 nm
B. 260 nm to 450 nm
C. 380 nm to 750 nm
D. 480 nm to 720 nm

Answer

To determine the wavelength range of the visible spectrum, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Visible Spectrum**:
- The visible spectrum refers to the portion of the electromagnetic spectrum that can be detected by the human eye. It is the range of wavelengths that we perceive as light.

2. **Identifying the Wavelength Range**:
- The visible spectrum typically starts at approximately 380 nanometers (nm) and extends to about 750 nanometers (nm). This range includes all the colors that humans can see, from violet (at the lower end) to red (at the upper end).

3. **Evaluating the Options**:
- Given the options:
- 120 nm to 380 nm
- 260 nm to 450 nm
- 380 nm to 750 nm
- 480 nm to 720 nm
- We can analyze each option to see which one fits the known range of the visible spectrum.

4. **Analyzing Each Option**:
- **Option 1**: 120 nm to 380 nm - This range is incorrect as it starts below the visible spectrum.
- **Option 2**: 260 nm to 450 nm - This range is also incorrect as it does not encompass the full visible spectrum.
- **Option 3**: 380 nm to 750 nm - This range is correct as it matches the known limits of the visible spectrum.
- **Option 4**: 480 nm to 720 nm - This range is partially correct but does not include the full spectrum.

5. **Conclusion**:
- The correct answer is **380 nm to 750 nm**, as this range accurately represents the wavelengths of the visible spectrum.

### Final Answer:
The wavelength of the visible spectrum ranges from **380 nm to 750 nm**.