The visual purple is concerned with

Options

A. Bright light
B. Dim light
C. Moderate light
D. Darkness.

Answer

**Step-by-Step Solution:**

1. **Understanding Visual Purple**: Visual purple, also known as rhodopsin, is a pigment found in the photoreceptor cells of the retina called rods.

2. **Function of Rods**: Rods are specialized for vision in low-light conditions (scotopic vision). They are sensitive to light and help us see in dim light.

3. **Composition of Rhodopsin**: Rhodopsin is a protein that is a derivative of vitamin A. This compound is crucial for the functioning of rods in the retina.

4. **Comparison with Cones**: While rods (and thus rhodopsin) are responsible for vision in dim light, cones are the photoreceptor cells that function in bright light and are responsible for color vision.

5. **Conclusion**: Since visual purple (rhodopsin) is specifically associated with the function of rods, which operate under low-light conditions, the correct answer to the question is that visual purple is concerned with **dim light**.

**Final Answer**: Dim light.

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