power 4dThe focal length of a lens with a power of +4D is 25 cm. Show More | Share Save. Class 12 PHYSICS GEOMETRICAL OPTICS. Topper's Solved these Questions. OPTICS BOOK -POWER 4D POWER 4D - DAFTAR POWER 4D. Rp 30.000. Detail Produk . POWER 4D adalah jurnal ilmiah yang mempublikasikan riset terkini di