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The Nervous System and Sense Organs — Biology STD 10 — Question

ICSE BoardEnglish MediumSTD 10BiologyThe Nervous System and Sense Organs3 Marks
Question
Given below is a diagram depicting a defect of human eye. Study the same and then answer the questions that follows.

Image
(i) Identify the defect shown in the diagram.
(ii) Mention the cause of this defect.
(iii) Which lens is used to correct this defect?
✓

Answer

(i) Hypermetropia
(ii) The causes of hypermetropia includes: the focal length of the eye lens is too long, or the eyeball has become too small.
(iii) This defect can be corrected by using a convex lens.

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