Physics
Grade-10
Easy
Question
The power of the lens used by Roshan is +2.5 D. Which of these eye defects does he have?
- Myopia
- Hypermetropia
- Presbyopia
- Both 1 and 2
Hint:
The positive sign means it is a convex lens.
The correct answer is: Hypermetropia
The correct option is b) Hypermetropia.
The power of the lens is +2.5 D. The positive sign indicates a convex lens. A convex lens is used to correct hypermetropia, where the light rays are focused behind the retina.
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