A person can see objects as near as 40 cm and as far as 3 m. What kind of spectacles will be required (a) for reading purposes, (b) for seeing distant

Question

A person can see objects as near as 40 cm and as far as 3 m. What kind of spectacles will be required (a) for reading purposes, (b) for seeing distant

A person can see objects as near as 40 cm and as far as 3 m. What kind of spectacles will be required (a) for reading purposes, (b) for seeing distant objects? Least distance of distinct vision = 25 cm. What is the range of clear vision with each pair of spectacles?

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - (a) `1.5`D(convex), (b) `0.33`D(concave), with reading glasses he can see clearly from 25 cm to `54.5` cn and with distant glasses from 46 cm to infinity

5 views Answered 2023-02-05 15:29