The change in focal length of an eye lens is caused by the action of the : (a) pupil (b) retina. (c) ciliary muscles. (d) iris.

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Chapter 10 NCERT Class 10 Science SOLUTIONS

4. The change in focal length of an eye lens is caused by the action of the : (a) pupil (b) retina. (c) ciliary muscles. (d) iris

Question:

The change in focal length of an eye lens is caused by the action of the :

(a) pupil (b) retina

(c) ciliary muscles (d) iris

Answer:

(c) ciliary muscles

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