Explain, how the eye adjusts itself when a person enters a dark cinema hall from bright sunshine.

Explanation

### Step-by-Step Solution:

1. **Understanding the Initial Condition**:
- When a person is in bright sunlight, their eyes are exposed to a high level of light. In this situation, the eye needs to reduce the amount of light entering to prevent damage and to maintain clear vision.

2. **Role of the Pupil**:
- The pupil is the opening in the center of the eye that allows light to enter. Its size can change depending on the light conditions. In bright light, the pupil constricts (becomes smaller) to limit the amount of light that enters the eye.

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