When viewing an object at close distance,the lens becomes and the ciliary muscles are .
A)thinner;relaxed
B)thinner;contracted
C)thicker;relaxed

Name: When viewing an object at close distance,the lens becomes and the ciliary muscles are . A)thinner;relaxed B)thinner;contracted C)thicker;relaxed
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Quizplus · Accepted Answer

When viewing an object at close distance, the lens becomes thicker to increase its refractive power, and the ciliary muscles contract to allow this change in lens shape.

When Viewing an Object at Close Distance,the Lens Becomes and the Ciliary