When a ray of light passes through a prism,

Options

A. the deviation of red light is maximum.
B. the deviation of violet light is maximum.
C. the deviation of blue light is maximum.
D. all rays deviate equally.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the deviation of light rays when they pass through a prism. Specifically, it inquires whether the deviation of red light, violet light, blue light, or all rays is equal.

2. **Concept of Deviation:**
When a ray of light passes through a prism, it bends or deviates from its original path. This bending occurs due to the change in speed of light as it enters and exits the prism material.

3. **White Light and its Spectrum:**
White light is made up of multiple colors. When white light passes through a prism, it splits into its constituent colors, which are represented by the acronym "VIBGYOR" (Violet, Indigo, Blue, Green, Yellow, Orange, Red).

4. **Angle of Deviation:**
The angle of deviation is defined as the angle between the original path of the light ray and its new path after passing through the prism. Different colors of light deviate by different amounts.

5. **Comparing Colors:**
- **Red Light:** Red light has the least deviation when passing through a prism.
- **Violet Light:** Violet light has the maximum deviation.
- **Blue Light:** Blue light has a deviation that is in between red and violet.

6. **Conclusion:**
Based on the above observations, the correct answer to the question is that the deviation of violet light is maximum compared to red and blue light.

**Final Answer:**
The deviation of violet light is maximum.

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