Science, asked by vaibhavswami2734, 11 months ago

A person can read a book placed at 20 cm . If the book is kept at 30cm he needs the spectacles to read . Find out:-
(a) Focal length of the lens.
(b) Type of the lens

Answers

Answered by jebastin11

0

Answer:

yes he can't see when book is kept at 30cm

Explanation:

(a) myopia

(b) concave

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