The light which refracts most while passing through a prism is

Options

A. red
B. violet
C. indigo
D. yellow

Answer

To solve the question "The light which refracts most while passing through a prism is," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Refraction**: Refraction is the bending of light as it passes from one medium to another due to a change in speed. The degree of bending depends on the wavelength of the light and the refractive index of the medium.

2. **White Light and Prism**: When white light passes through a prism, it splits into a spectrum of colors. This spectrum consists of seven colors, often remembered by the acronym "VIBGYOR" (Violet, Indigo, Blue, Green, Yellow, Orange, Red).

3. **Wavelength and Refractive Index**: Different colors of light have different wavelengths. Violet light has the shortest wavelength, while red light has the longest wavelength. The refractive index (n) of a medium is inversely proportional to the wavelength (λ) of light passing through it. This means that shorter wavelengths will have a higher refractive index.

4. **Determining Which Color Refracts Most**: Since violet light has the shortest wavelength, it will have the highest refractive index when passing through the prism. Consequently, it will refract the most. On the other hand, red light, with the longest wavelength, will have the lowest refractive index and will refract the least.

5. **Conclusion**: Therefore, the light that refracts the most while passing through a prism is violet light.

### Final Answer:
The light which refracts most while passing through a prism is **violet light**.

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