Asta Powerproject 4D

power 4d[ Power Pattern ] Find best premutated 4D numbers based on historical trend.For eg., ABCD=24x, AACD=12x, AABB=6x, AAAB=4x, AAAA=1x Please note thatThe 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 -