Which has the smallest wave length ?

Options

A. Red colour
B. Violet colour
C. yellow colour
D. Blur colour

Answer

To determine which color has the smallest wavelength, we will analyze the visible spectrum of light, commonly referred to as VIBGYOR (Violet, Indigo, Blue, Green, Yellow, Orange, Red). The wavelengths of these colors vary, and we need to identify which color corresponds to the shortest wavelength.

### Step-by-Step Solution:

1. **Understand the Visible Spectrum**: The visible spectrum consists of seven colors represented by the acronym VIBGYOR. Each color has a specific range of wavelengths.

2. **Identify the Order of Wavelengths**: The order of colors in terms of increasing wavelength is:
- Violet (shortest wavelength)
- Indigo
- Blue
- Green
- Yellow
- Orange
- Red (longest wavelength)

3. **Compare the Wavelengths**:
- Violet light has the shortest wavelength, typically around 380-450 nm.
- Red light has the longest wavelength, typically around 620-750 nm.
- The other colors (Indigo, Blue, Green, Yellow, Orange) fall in between these two extremes.

4. **Conclusion**: Since violet has the shortest wavelength among the colors listed in the options (red, violet, yellow, blue), we can conclude that the color with the smallest wavelength is **Violet**.

### Final Answer:
**Violet color has the smallest wavelength.**