A) Because equivalent focal length remains the same as that of the spectacles.
B) Because the focal length of the eye lens is effectively decreased.
C) Because the image of the plate is formed at a longer distance.
D) Both (a) and (b)
Correct Answer: B
Solution :
The man is suffering from hypermetropia. By looking through the hole of a paper of 3 to 4 mm, which works like a convex lens, the focal length of the eye lens is effectively decreased.
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