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Author Question: A 4.0-cm tall apple is 20 cm in front of a plano-convex lens of focal length 75 cm. (a) Find the ... (Read 122 times)

jho37

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on: Jul 29, 2018
A 4.0-cm tall apple is 20 cm in front of a plano-convex lens of focal length 75 cm. (a) Find the location of the image of the apple. Is it a real or a virtual image? (b) How tall is the image of the apple? Is it upright or inverted?
 
  What will be an ideal response?

Question 2

How far from a converging lens of focal length 30 cm must an object be placed so the image will be virtual and 3.0 times as large as the object?
 
  What will be an ideal response?


kilada

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Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 27 cm in front of the lens, virtual (b) 5.5 cm, upright

Answer to Question 2

20 cm


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