Near and far points of a human eye are

Options

A. 25 cm and infinite
B. 25 cm and 100 cm
C. 55 cm and 200 cm
D. 0 cm and 25 cm

Answer

To determine the near and far points of a human eye, we can follow these steps:

### Step 1: Define the Near Point
- The near point of the human eye is the closest distance at which the eye can see an object clearly without any strain.

### Step 2: Identify the Average Near Point Distance
- For a normal human eye, the average near point is typically taken to be 25 centimeters. This means that objects closer than this distance may not be seen clearly without straining the eye.

### Step 3: Define the Far Point
- The far point of the human eye is the farthest distance at which the eye can see an object clearly.

### Step 4: Identify the Average Far Point Distance
- For a normal human eye, the far point is considered to be at infinity. This means that the eye can see objects at a very large distance (theoretically, at infinity) without any difficulty.

### Step 5: Summarize the Results
- Therefore, the near point of a human eye is approximately 25 cm, and the far point is at infinity.

### Final Answer
- Near Point: 25 cm
- Far Point: Infinity

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