Question

An old man cannot read newspaper placed nearer than 50 cm from his eyes. Name the defect of vision he is suffering from. Draw a ray diagram to illustrate this defect. List it's Two possible causes. Also draw a ray diagram to show how the effect may be corrected using a lens of appropriate focal length

Answer 1

he is suffering from hypermetropia ...2 possible causes are
1 ..shrinking of eye ball
2..increase in focal length of eye lens
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Answer 2

(a) A person cannot read newspaper placed nearer than 50cm from his eyes. Name thedefect of vision he is suffering from. Draw a ray diagram to illustrate this defect.List its two possible causes. Draw a ray diagram to show how this defect may be

corrected using a lens of appropriate focal length.

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