In order to magnify an image seen through the telescope 100 times with the focal length of the primary objective of 800 mm we need an eyepiece with the focal length of
how do you figure this out(formula)
2007-03-16 07:50:07 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
1/F = 1/Do + 1/Di
Where Do = Object Distance and Di = Image Distance, F is Focal Lenght
Also you need to use
M = Hi/Ho = -Di/Do
M is Magnification, Hi is Image Height and Ho is Object Height, Di and Do are same as above
:)
2007-03-16 07:55:48 · answer #1 · answered by pedros2008 3 · 0⤊ 0⤋
magnification is primary focal length divided by eyepiece focal length. Mag of 100x requires 8mm focal length eyepiece for a 800mm primary focal length.
2007-03-16 14:59:09 · answer #2 · answered by Anonymous · 0⤊ 0⤋
hopefully this site will help you
2007-03-16 14:59:14 · answer #3 · answered by Indiana Frenchman 7 · 0⤊ 0⤋