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

 

Explanation

The ciliary muscles helps in changing the shape of the lens, thus changing its focal length.

  1. Class 10
  2. Chapter 11 Class 10 - Human Eye and Colourful World (Term 1)

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo