Power (P) of a lens is given by reciprocal of focal length (f) of

power 4dDapatkan keputusan 4D & Jackpot yang paling cepat di Malaysia secara langsung dari Magnum 4D (m4d), Sports Toto (t4d), Damacai 1+3D (Kuda). Dato4D - 4D Predict King (4D88).The 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 -