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Easy optics

  • Thread starter edoarad
  • Start date
  • #1
19
0
in a refracting telescope, the lens's diameter is 1.02 m and its focal length is 19.4 m.
how long must the telescope be to get an image, 40 times bigger?

i would also like to get a link to a site explaining this kind of elementary optics.
 

Answers and Replies

  • #2
19
0
just saw the warning, please dont delete my posts :S they are in a close enough format i think..
 

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