If the power of a lens is - 4.0 D, then it means that the lens is a

power 4dPower4D merupakan situs judi slot on terpercaya dan terlengkap yang dilengkapi dengan lisensi resmi dari PAGCOR atau Philippine Amusement and Gaming Corporation.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