Myopia: Image Formation and Correction

Steps:

• In a normal eye, light from distant objects focuses on the retina using the eye's converging lens.
• In short-sightedness (myopia), the eyeball is elongated, so the image forms in front of the retina, causing blur.
• A diverging lens is placed in front of the eye to spread incoming rays, shifting the virtual image back to the retina.
• This corrects focus for distant objects without altering the eye's structure.

Why A is correct:

• Myopia definition: excessive convergence places images in front of the retina; diverging lenses follow the lens formula (1/f = 1/v - 1/u) to create a virtual image at the eye's far point.

Why the others are wrong:

• B: Image on retina describes normal vision; converging lenses correct farsightedness, not myopia.
• C: Image behind retina indicates hyperopia (farsightedness), corrected by converging lenses.
• D: Image behind retina with diverging lens mismatches both myopia and hyperopia corrections.

Final answer: A