When a ray of light travels from water (`mu` = 4/3) to glass (`mu` = 1.5), it bends towards the normal.

Answer

### Step-by-Step Solution

1. **Identify the Refractive Indices**:
- The refractive index of water (μ_water) is given as \( \frac{4}{3} \) (approximately 1.33).
- The refractive index of glass (μ_glass) is given as 1.5.

2. **Determine the Mediums**:
- Water is considered a rarer medium compared to glass, which is a denser medium.
- In optics, a medium with a lower refractive index is termed rarer, while a medium with a higher refractive index is termed denser.

3. **Understand the Refraction Rule**:
- When light travels from a rarer medium to a denser medium, it bends towards the normal.
- Conversely, when light travels from a denser medium to a rarer medium, it bends away from the normal.

4. **Analyze the Transition from Water to Glass**:
- In this case, light is traveling from water (the rarer medium) to glass (the denser medium).
- According to the refraction rule, since the light is moving from a rarer medium (water) to a denser medium (glass), it will bend towards the normal.

5. **Conclusion**:
- Since the statement claims that the ray of light bends towards the normal when traveling from water to glass, this statement is true.

### Final Answer:
The statement is **True**.

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