CBSE Class 10 Science 2023 Outside Delhi Set 3

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Question : 5
Total: 12
The change in the focal length of an eye lens in human beings is caused by the action of
Solution:  
The relaxation or contraction of ciliary muscles changes the curvature of the eye lens. The change in curvature of the eye lens changes the focal length of the eyes. Hence, the change in focal length of an eye lens is caused by the action of ciliary muscles.
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