4D Malaysia

power 4dDurapower Group offers closed-loop, end-to-end Energy Storage Solutions for a variety of e-mobility, specialty, and stationary applications. Focusing on the manufacturing, research,Given, 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 = 1f