The first law of refraction states that the incident and refracted rays are in the same ____as the normal.

Explanation

To solve the question regarding the first law of refraction, 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. This bending occurs due to a change in the speed of light in different media.

2. **Identifying the Rays**: In the context of refraction, we have:
- An **incident ray**: The ray of light that strikes the boundary between two media.
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