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The human eye possesses the power of accommodation. This is the power to:(a) alter the diameter of the pupil as the intensity of light changes(b) distinguish between lights of different colours(c) focus on objects at different distances(d) decide which of the two objects is closer.
(c) focus on objects at different distances
Explanation
The "power of accommodation" of the human eye refers to the ability of the eye to focus the distant objects as well as the nearby objects on the retina by changing the focal length (or converging power) of its lens.
Thus, when the light is coming from a distant object the light rays refract slightly as the lens got stretched/tighten by ciliary muscles which results in a decrease in the thickness of the lens (becomes thin).
Whereas, when the light is coming from a nearby object the light rays refract (bends) more strongly as the lens got slacken/loosen by ciliary muscles which results in an increase in the thickness of the lens (becomes thick).
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