CBSE Class 10 Answered
c
Asked by hels145 | 03 Jul, 2008, 06:07: PM
Expert Answer
use the formula 1/F = 1/f + 1/f (this will give combined focal length)
now use the formula P = 1/ F (this will give power) of the combination.
Answered by | 04 Jul, 2008, 11:44: AM
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