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Author Question: Light of wavelength 500 nm illuminates a round 0.50-mm diameter hole. A screen is placed 6.3 m ... (Read 137 times)

karlynnae

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on: Jul 29, 2018
Light of wavelength 500 nm illuminates a round 0.50-mm diameter hole. A screen is placed 6.3 m behind the slit. What is the diameter of the central bright area on the screen?
 
  A) 15 mm
  B) 270 m
  C) 7.7 mm
  D) 3800 m

Question 2

The objective and the eyepiece of a microscope have focal lengths of 4.00 mm and 25.0 mm, respectively.
 
  The objective produces a real image 30 times the size of the object. The final image is viewed at infinity, and the near point of the microscope user is at 25.0 cm. What is the distance between the object and the focal point of the objective?
  A) 0.13 mm
  B) 0.18 mm
  C) 0.23 mm
  D) 0.28 mm
  E) 0.33 mm
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ghepp

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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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karlynnae

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


ghepp

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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