What Image Forms with an Object Two Focal Lengths from a Diverging Lens?

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SUMMARY

An object placed two focal lengths from a diverging lens produces a virtual image. The magnification (m) is calculated to be 1, indicating that the image size is equal to the object size. The image forms on the same side as the object, with a distance (d_i) of -2f. The discussion emphasizes the importance of using the Thin Lens formula for accurate calculations.

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  • Knowledge of virtual images and magnification
  • Basic principles of optics
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Homework Statement



2. An object is placed two focal lengths from a
diverging lens.
What type of image forms?
What is the magnification?
Where is the image?

Homework Equations



1/f = (n-1)(1/r1-1/r2)

The Attempt at a Solution



a) Virtual Image

b) m = 1

c) the image is on the same side as the object with d_i = -2f
 
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sapiental said:

Homework Equations



1/f = (n-1)(1/r1-1/r2)
That's the "Lens Maker's formula"; what you need is the "Thin Lens formula". (Look it up!)
 

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