Lens Makers Formula/ Len's Formula: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Lens Makers Formula/ Len's Formula. Understanding the underlying formula is key to arriving at the correct answer below:

The near point for a normal eye is \(25 \text{ cm}\), meaning objects closer than this cannot be focused clearly on the retina. So, Assertion (A) is true. However, for a normal eye attempting to focus on an object closer than its near point, the image would effectively form *behind* the retina if the lens power is insufficient, not before it. Thus, Reason (R) is false.