Question 1:
The human eye can focus objects at different distances by adjusting the focal
length of the eye lens. This is due to
(a) presbyopia
(b) accommodation
(c) near-sightedness
(d) far-sightedness
Answer:
(b) Human eye can change the focal length of the eye lens to see the objects
situated at various distances from the eye. This is possible due to the power of
accommodation of the eye lens.
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