Question

A person having normal eye can clearly see an object, if the distance of the object from the eye is:

• A. in between 50 cm and 100 m
• B. in between 25 cm and infinity
• C. in between 100 cm and 1000 m
• D. in between 25 cm and 150 cm

Hint:

The normal human eye can clearly see objects at distances between 25 cm and infinity.

Answer 1

The Correct Option is B

The normal eye can clearly see objects that are within a specific range. This range is between the near point (approximately 25 cm) and infinity. The near point is the closest distance at which the eye can focus on an object, and the far point is at infinity for a normal eye.

Step 1: Understanding the near point and far point.
For a normal human eye, the near point is around 25 cm (the closest distance at which a person can clearly see an object). The far point is infinity, meaning the eye can clearly see objects at any distance beyond 25 cm.

Step 2: Analysis of Options.
- (A) in between 50 cm and 100 m: This is incorrect because the normal eye can see objects closer than 50 cm (around 25 cm).
- (B) in between 25 cm and infinity: This is correct because the normal eye can clearly see objects in this range.
- (C) in between 100 cm and 1000 m: This is incorrect because the normal eye can see objects as close as 25 cm.
- (D) in between 25 cm and 150 cm: This is incorrect because the range of vision is much broader for a normal eye.

Step 3: Conclusion.
The correct answer is (B) in between 25 cm and infinity.