The defect of vision in which a person cannot see nearby objects clearly is
A. Presbyopia
B. Astigmatism
C. Hypermetropia
D. Myopia
Answer: Option C
Solution (By JKSSB Mock Tests)
Hypermetropia (farsightedness): near point farther away, difficulty seeing close objects. Corrected with convex lens. Myopia: distant objects blurry. Presbyopia due to aging. Astigmatism due to irregular cornea.
Explanation:
Concave mirror: real, inverted image forms when object beyond focal point (u > f). Between pole and focus: virtual, erect image. At focus: image at infinity. Memory aid: 'Concave: object beyond F ⇒ real image; within F ⇒ virtual'. Ray optics concept frequently tested to verify mirror image formation understanding in competitive exams.
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