Diverging lens optics

  • #1
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Diverging lens has focal length 6mm and image magnification 0.5. What is the distance between object and lens?

I used the fact that distance image to lens/distance object to lens = 0.5 and the lens maker formula with f=-6 and combined the two formula but this gives distance = 18mm, when answer is in fact 6mm.
Where have I gone wrong?
 

Answers and Replies

  • #2
ehild
Homework Helper
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Diverging lens has focal length 6mm and image magnification 0.5. What is the distance between object and lens?

I used the fact that distance image to lens/distance object to lens = 0.5 and the lens maker formula with f=-6 and combined the two formula but this gives distance = 18mm, when answer is in fact 6mm.
Where have I gone wrong?

Show your work. Take care of the signs.

ehild
 
  • #3
41
0
thanks solved it
 

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