Question

The defect myopia can be corrected by using a:

• A. convex lens
• B. concave lens
• C. bifocal lens
• D. plano convex lens

Hint:

- Myopia is corrected with a diverging lens (concave). - Hypermetropia is corrected with a converging lens (convex).

Answer 1

The Correct Option is B

Step 1: Understand the cause of myopia.
Myopia (nearsightedness) occurs when the image of distant objects is formed in front of the retina. 
Step 2: Determine the type of lens needed for correction.
A concave lens diverges the incoming light rays, causing the image to be formed farther back on the retina, thus correcting myopia. 
Step 3: Recall the function of other lenses.
Convex lens: Converges light rays (used for hypermetropia).
Bifocal lens: Has both converging and diverging sections (used for presbyopia).
Plano-convex lens: A type of converging lens.