A ray of light passes from solid medium 1 into solid medium 2. The refractive index of medium 1 is the same as that of medium 2. Which of the figures correctly shows the path of the ray of light in the two mediums?

Options

A.
B.
C.
D.

Answer

To solve the question regarding the path of a ray of light passing from solid medium 1 to solid medium 2, where the refractive indices of both mediums are equal, 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 amount of bending depends on the refractive indices of the two mediums.

2. **Identifying Refractive Indices**: According to the question, the refractive index of medium 1 (μ1) is the same as that of medium 2 (μ2). Therefore, we have:
\[ μ1 = μ2 \]

3. **Analyzing the Effect of Equal Refractive Indices**: When light travels from one medium to another and their refractive indices are equal, there is no change in speed, and thus no bending occurs. The light will continue in a straight line.

4. **Visualizing the Path of Light**: Since the light does not bend when passing from medium 1 to medium 2, the path of the ray will be a straight line. This can be represented graphically by a straight line crossing the boundary between the two mediums without any angle of refraction.

5. **Choosing the Correct Figure**: Among the provided figures, the correct one will show the ray of light entering medium 2 without any deviation from its original path. This is typically represented as a straight line crossing the interface between the two mediums.

6. **Conclusion**: The correct figure that represents the path of the ray of light, given that the refractive indices are equal, is the one that shows the light ray continuing in a straight line.

### Final Answer:
The correct figure is the one that shows the ray of light passing straight through from medium 1 to medium 2 without bending.

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