WAEC Physics 2015 Objective — Question 27

Question 27 of 50 from the West African Examinations Council (WAEC) Physics 2015 Objective paper, with the correct answer and a full explanation.

Which of the following types of lenses is suitable for correcting the eye defect illustrated by the ray diagram above (converging rays that focus behind the retina)?

A. Bi-convergingCorrect
B. Bi-diverging
C. Piano diverging
D. Diverging meniscus

Explanation

The ray diagram illustrates hypermetropia (long-sightedness), where the image forms behind the retina; it is corrected using a converging (convex) lens.

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