The second law of refraction states that `(sini)/()`=constant.

Explanation

To solve the question regarding the second law of refraction, which states that \( \frac{\sin i}{\sin r} = \text{constant} \), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Refraction**:
- Refraction occurs when light passes from one medium to another and changes its speed, resulting in a change in direction.

2. **Identifying Angles**:
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