📘 optics
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Lens Power Addition 6Afabd
1. The problem asks to find the combined SPHERE power when adding two lenses given in minus cylinder format.
2. Each lens power is given as SPHERE - CYLINDER x AXIS.
Linza Fokusi Optik Markaz 2F70F8
1. Muammo: Linzaning fokusi va optik markazini aniqlash kerak.
2. Optik markaz linzaning geometrik markazi bo'lib, u orqali o'tgan nur yo'nalishi o'zgarmaydi.
Lens Power Eb1C03
1. **State the problem:** We want to find the power $P$ of a magnifying glass lens that achieves an angular magnification $M=4$ when the object is placed 10 cm in front of the lens