The power of a lens is +4D. Find the focal length of

power 4dGiven, Power of convex lens=4D. Placed at 40 cm from a wall. To Find, Distance of a candle. Solution, It is given that ,Power = 4D. Then, P = 1f. So, 4 D = 1fCinema 4D is a professional 3D animation, modeling, simulation and rendering software solution. Fast, powerful, flexible, and stable, this powerful toolset makes 3D workflows more accessible