If a near-sighted person cannot see objects clearly

Solution

Sol. For a person with myopia (near-sightedness), the focal length of the concave lens should equal the farthest distance at which the person can see clearly. Here, the required focal length is 1.2 meters. Information Booster:

• Myopia is corrected using a concave lens.
• It occurs due to an elongated eyeball or a steep cornea.
• Concave lenses help focus light farther away.
• Commonly develops during childhood.
• Proper eyeglasses or contact lenses help correct the vision.

• 1.5 m: Suitable for moderate myopia.
• 2.2 m: Can apply to hyperopia cases.