4D Number - Live 4D Results - Keputusan 4D - Magnum 4D, Toto 4D
power 4dAnswer:the power of a convex lens is always positive. as you can see here the power is +4D, therefore the nature of the lens is that it is a convex lens. we know, P = 1f. also3d toallai powerc4dc4d! stable diffusion