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Author Question: A person has a near point of 20 cm and a far point of 100 cm. Wearing lenses of focal length that ... (Read 106 times)

brutforce

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on: Jul 28, 2018
A person has a near point of 20 cm and a far point of 100 cm. Wearing lenses of focal length that correct the nearsightedness, what will the person then have as a near point? Also, what is the power of the corrective lens?
  1.17 cm, 1 diopter
  2.25 cm, 1 diopter
  3.25 cm, 1 diopter
  4.17 cm, 1 diopter

Question 2

A nearsighted person has a far point of 2.0 m. Neglecting eye-lens distance, what power lens would allow good distant vision?
  1.2.0 diopters
  2.0.50 diopter
  3.2.0 diopters
  4.0.50 diopter


ErinKing

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Reply #1 on: Jul 28, 2018
Answer to Question 1

2

Answer to Question 2

4


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