Physics
Grade-10
Easy
Question
_____ can be used to correct hypermetropia.
- Concave lenses
- Convex lenses
- Myopia
- Presbyopia
Hint:
Convex optical lenses are used to bend light rays slightly inwards (so-called plus lenses). As it passes through the cornea and lens, the light rays take a narrow angle to refocus. As a result, the light rays are concentrated in front of the eye.
The correct answer is: Convex lenses
The correct option is b)Convex lenses
This defect is caused by the low focusing power of the eye lens (due to its long focal length). Or, an eyeball that is too short causes light to focus beyond the retina rather than directly onto it.
This is corrected using spectacles with convex lenses that have a focal length (or power) that creates an image of the object at the near point.
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