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# The distance between the object and real image is D. If the magnification is m, find the focal length .

Asked by Paraukkhal 26th January 2011, 8:27 PM
Answered by Expert
Answer:
Dear student,

M = 1/f

1/f = 1/D + 1/D

1/f = 2/D = M

f = 1/M = D/2

Hope this helps.
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Team
Topperelarning.com
Answered by Expert 26th January 2011, 9:12 PM
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