Which of the following statements are incorrect?
(i) Pupil gives the eye its distinctive colour.
(ii) Iris controls the amount of light entering into the eye.
(iii) Cones are sensitive to dim light and rods to bright light.
(iv) Near point for a normal eye is 25 m.
(v) Far point for a normal eye is infinity.

Options

A. (i) and (iii) only
B. (i), (iii) and (iv) only
C. (i), (ii), (iv) and (v) only
D. (i), (ii), (iii), (iv) and (v)

Answer

To determine which statements are incorrect, let's analyze each statement one by one:

1. **Statement (i)**: "Pupil gives the eye its distinctive colour."
- **Analysis**: This statement is incorrect. The pupil is the opening in the center of the eye that allows light to enter; it does not have color. The color of the eye is determined by the iris, which surrounds the pupil.

2. **Statement (ii)**: "Iris controls the amount of light entering into the eye."
- **Analysis**: This statement is correct. The iris is a muscle that adjusts the size of the pupil, thereby controlling how much light enters the eye.

3. **Statement (iii)**: "Cones are sensitive to dim light and rods to bright light."
- **Analysis**: This statement is incorrect. Cones are actually sensitive to bright light and are responsible for color vision, while rods are sensitive to dim light and are responsible for night vision.

4. **Statement (iv)**: "Near point for a normal eye is 25 m."
- **Analysis**: This statement is incorrect. The near point for a normal eye is typically around 25 centimeters, not 25 meters.

5. **Statement (v)**: "Far point for a normal eye is infinity."
- **Analysis**: This statement is correct. The far point for a normal eye is considered to be at infinity, which refers to the maximum distance at which the eye can see objects clearly.

### Summary of Incorrect Statements:
- The incorrect statements are (i) "Pupil gives the eye its distinctive colour" and (iii) "Cones are sensitive to dim light and rods to bright light."

### Final Answer:
The incorrect statements are (i) and (iii).

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