Frcophth Part 1 Anki Today
Q: A +10D lens is placed 2cm in front of a +5D lens. Calculate combined power (thin lens approximation). A: ( P_total = P_1 + P_2 - d P_1 P_2 = 10 + 5 - (0.02 \times 10 \times 5) = 14D )
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