If Mark is unable to see objects clearly when they are placed beyond 0.5m away, (a)...

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If Mark is unable to see objects clearly when they are placed beyond 0.5m away, (a)...

If Mark is unable to see objects clearly when they are placed beyond 0.5m away, (a) is he near-sighted or far-sighted? (b) If instead he wears eye-glasses, and they are to sit 2.0cm in front of his eyes, what prescription should they be?

science Advanced-Physics

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Answer 1

Answer #1

Since Mark is unable to see the objects beyond 50cm(0.5m) away he is near sighted. not able to see

By wearing an eye glass the object sit 2cm in front of his eyes.

ie the power of lens is

where f is the focal lenth

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Answer 2

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