Lens Refraction Problems: Help with Calculating Image Distance and Magnification

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Homework Help Overview

The discussion revolves around lens refraction problems involving converging and diverging lenses, specifically focusing on calculating image distances and magnification based on given object distances and focal lengths.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to solve three distinct problems related to lens equations but expresses uncertainty about the calculations. Some participants suggest applying the lens equation as a straightforward approach, while others inquire about the original poster's work to provide assistance.

Discussion Status

The discussion is active, with participants offering guidance and requesting clarification on the original poster's attempts. There is a mix of responses, with some problems being resolved while others remain uncertain.

Contextual Notes

The original poster has not provided detailed workings for the problems, which may limit the ability of others to offer targeted help. The problems involve specific numerical values and require careful consideration of sign conventions in lens formulas.

moonlit
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I'm really not sure how to figure these 3 problems out. Can someone please help me. Thanks.

1) A converging lens has a focal length of 85 cm. A 14-cm-tall object is located 121 cm in front of this lens. (a) What is the image distance? (b) What is the image height? Be sure to include the proper algebraic sign.

2) An object is located 38.2 cm to the left of a converging lens whose focal length is 59.2 cm. (a) Determine the image distance and (b) the magnification.

3) An object is 27 cm in front of a diverging lens that has a focal length of -14 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 2.1?
 
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I got the last one but the other two I'm still unsure of...
 
If you would like some help, show your work and I'll take a look.
 
Nevermind, I figured it out. Thanks anyway!
 

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