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Author Question: What power lens is needed to correct for nearsightedness where the uncorrected far point is 75 cm? ... (Read 22 times)

rl

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on: Jul 27, 2018
What power lens is needed to correct for nearsightedness where the uncorrected far point is 75 cm?
 
  A) -1.33 D
  B) +1.33 D
  C) -0.75 D
  D) +0.75 D
  E) -1.00 D

Question 2

An electron is trapped in a box of width 0.10 nm. What is the wavelength of the photon emitted when an electron makes a transition from the n = 3 to the n = 1 state?
 
  What will be an ideal response?


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ErinKing

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

4.1 nm


rl

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

bitingbit

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Reply 3 on: Yesterday
Gracias!

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Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

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