The focal length of a lens of power + 4D is

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 = 1fSYNCHRO Construction Solution - SYNCHRO 4D Power BI Data Connector - Prerequisites Setting up Global Environments SYNCHRO Control Permissions Using Connector Table