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Author Question: The near point of a farsighted person is 65 cm. What power contact lens must he use to correct this ... (Read 25 times)

kellyjaisingh

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on: Jul 29, 2018
The near point of a farsighted person is 65 cm. What power contact lens must he use to correct this problem and be able to read a book at a normal near point of 25 cm?
 
  A) -4.2 diopters B) +4.2 diopters C) -2.4 diopters D) -2.5 diopters E) +2.5 diopters

Question 2

An 18-mm wide diffraction grating has rulings of 880 lines per mm. Monochromatic light of 590 nm wavelength is incident normally on the grating.
 
  What is the largest angle, measured from the central bright spot, at which an intensity maximum is formed?
  A) 23 B) 25 C) 31 D) 29 E) 27
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sultansheikh

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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kellyjaisingh

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Reply #2 on: Jul 29, 2018
Thanks


sultansheikh

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Reply #3 on: Jul 29, 2018
Welcome :)


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