Photosynthetic pigments absorb visible part of radiation (380 m`mu` to 760 m`mu` ).

Explanation

**Step-by-Step Solution:**

1. **Understanding Photosynthetic Pigments:**
- Photosynthetic pigments are molecules that absorb light energy from the sun, which is crucial for the process of photosynthesis in plants.

2. **Visible Light Spectrum:**
- The visible light spectrum ranges from approximately 380 nanometers (nm) to 760 nanometers (nm). This range includes all the colors visible to the human eye.

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