Which of the following sources of light is different from others?

Options

A. Sunlight
B. White light
C. Light from a bulb
D. Sodium light

Explanation

### Step-by-Step Solution:

1. **Identify the Sources of Light**: The question provides four sources of light:
- Sun
- White light
- Light from a bulb
- Sodium light

2. **Understand the Nature of Each Source**:
- **Sun**: A natural source of light that emits a broad spectrum of colors (visible light).
- **White Light**: A mixture of all colors of light in the visible spectrum, typically produced by incandescent bulbs or sunlight.
- **Light from a Bulb**: Generally produces white light, which also contains a range of colors.
- **Sodium Light**: A specific type of light that emits a narrow wavelength range, primarily yellow light.

3. **Analyze the Wavelengths**:
- The wavelength of sodium light is approximately between 5890 angstroms to 5896 angstroms.
- The visible spectrum ranges from about 4000 angstroms to 7000 angstroms, which includes all colors of light.

4. **Determine the Differences**:
- Sodium light emits a very limited range of wavelengths compared to the other sources, which emit a broad spectrum of colors.
- When passed through a prism, sodium light produces only a few specific colors, while white light and sunlight produce a full spectrum (7 colors).

5. **Conclusion**:
- Sodium light is the most different from the other sources because it has a narrow wavelength range and produces limited colors when refracted through a prism, unlike the other sources which provide a full spectrum of colors.

### Final Answer:
**Sodium light is the different source of light among the options provided.**

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