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Q. |
If f1 and f2 are the distances from the optical center of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good |
A. | f = f1 + f2 |
B. | f = (f1 + f2) |
C. | 1/ f1 + 1/ f2 |
D. | none of these. |
Answer» C. 1/ f1 + 1/ f2 |
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