Que no. 18 its a question from human eye and the colourful world.....please answer ASAP!
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he is suffering from presbyopia....2 he should wear bi-focals
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a) presbyopia
b) bi focal lens must be used.
c) pic. is attached.
d) the value showed by the man sitting near the grandfather is care and helping nature.
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Sorry but the ray diagram! Also should include use of concave lens as bifocal lens in used
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