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CBSE Class 10 Answered

The distance between the object and real image is D. If the magnification is m, find the focal length .
Asked by Paraukkhal | 26 Jan, 2011, 08:27: PM
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.
Thanking you
Team
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Answered by | 26 Jan, 2011, 09:12: PM
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