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

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.