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Author Question: An object is placed 15 cm to the left of a double-convex lens of focal length 20 cm. Where is the ... (Read 83 times)

deesands

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on: Jul 29, 2018
An object is placed 15 cm to the left of a double-convex lens of focal length 20 cm. Where is the image of this object located?
 
  A) 60 cm to the right of the lens
  B) 60 cm to the left of the lens
  C) 8.6 cm to the right of the lens
  D) 8.6 cm to the left of the lens
  E) 30 cm to the left of the lens

Question 2

How far from a +50-mm focal length lens, such as is used in many 35-mm cameras, must an object be placed so it will form a real image that is 3.0 times the size of the object?
 
  A) 46 mm
  B) 52 mm
  C) 58 mm
  D) 67 mm
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iceage

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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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deesands

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  • Posts: 514
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

tranoy

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Reply 3 on: Yesterday
Gracias!

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