Question Detail

PHY 104 The Human Eye Objective Question
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Question

When a normal eye accommodates to view a closer object, how does the crystalline lens change?
Options
A It flattens, decreasing its radius of curvature.
B It bulges, decreasing its radius of curvature.
Correct Answer
C It bulges, increasing its radius of curvature.
D It flattens, increasing its radius of curvature.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The text states that for closer objects, 'the tension in the ciliary muscle increases and it contracts, causing the lens to bulge and its radius of curvature to change.' When the lens bulges, it becomes more curved, meaning its radius of curvature decreases, thus increasing its refractive power.

Hint

To focus on closer objects, the eye needs more refractive power. How does the lens achieve this?

Question Info

Course: PHY 104
Topic: The Human Eye
Type: Objective
Difficulty: Not specified
Question 622 of 947
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