A short-sighted person has a near point of 15 cm and a far point of 40 cm. (a) Can he see clearly an object at a distance of: (i) 5 cm? (ii) 25 cm? (iii) 50 cm?

The Human Eye and Colourful World

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28/08/2021 7:26 pm

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Deepak Rock

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A short-sighted person has a near point of 15 cm and a far point of 40 cm.

(a) Can he see clearly an object at a distance of: (i) 5 cm? (ii) 25 cm? (iii) 50 cm?

(b) To see clearly an object at infinity, what kind of spectacle lenses does he need?

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28/08/2021 7:26 pm

Shivani siva

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(a) (i) No, (ii) Yes, (iii) No

(b) Concave lenses

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