SELECT * FROM question_mgmt as q WHERE id=3770 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=16 AND chapterId=262 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th science The Human Eye and the Colourful World what is meant by power of accommodation of the eye

Question:

What is meant by power of accommodation of the eye?

Answer:

Accommodation is a reflex mechanism in by which eyes changes the focal power to make the farthest and the nearest object clearly visible on the retina. Human beings have the good power of accommodation. Accommodation requires the refraction of light rays when they passed from one medium to another for getting focus on retina. Refraction occurs at the lens  and it depends on the angle of the light or distance of the object from cornea. Thus, the degree of refraction is changed by changing the convexity of the lens. And, all of this mechanism is done with the help of ciliary muscles or suspensory ligament also known as accommodation apparatus.


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