ICSE Class 10 Answered
When can be the first and the second focal length of a lens be equal . i.e f1 = f2 (numerically) ?
Asked by Topperlearning User | 27 Mar, 2014, 01:32: PM
Expert Answer
If the medium on both sides of the lens is same, the first and second focal length are equal, i.e f1 = f2 (numerically).
Answered by | 27 Mar, 2014, 03:32: PM
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