For point of normal human eye is:

Options

A. 25cm
B. 25m
C. 500m
D. infinity

Explanation

To solve the question regarding the far point of a normal human eye, we can follow these steps:

### Step 1: Understand the Concept of Far Point
The far point of the eye is the farthest distance at which the eye can see objects clearly. For a normal human eye, this distance is typically considered to be infinity.

### Step 2: Identify the Characteristics of a Normal Eye
A normal human eye can focus on objects at various distances. The far point is defined as the point at which light rays from a distant object converge on the retina without any strain.

### Step 3: State the Far Point of a Normal Human Eye
For a normal human eye, the far point is at infinity. This means that the eye can clearly see objects that are very far away, such as stars or distant buildings.

### Step 4: Clarify the Near Point
In addition to the far point, it is also important to know the near point of a normal human eye, which is typically around 25 cm. This is the closest distance at which the eye can focus on an object.

### Conclusion
Thus, the far point of a normal human eye is infinity.

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