Focal length

  • #1
shorty_47_2000
9
0
Can someone tell me what sort of equation I would use for this question, I can't use the magnification as I have two unknowns. At least I don't know how to apply the magnification equation to this question.

A microscope is made in a tube 25.0cm long. It magnifies 5.00 x 10 to the 2 times, 50.0 times by the objective lens and 10 times by the eyepiece. What is the focal length of the two lenses?
 

Answers and Replies

  • #3
cronodragon
11
0
What do you need to get greater magnification, a wider objective lens? :bugeye:
 
  • #4
mathmike
208
0
magnification is given by the eq. M = -q / p

see if that helps
 

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