Power (P) of a lens is given by reciprocal of focal length (f) 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 = 1fSDTOTO menyediakan berbagai link alternatif login untuk bermain slot gacor hari ini server luar negeri dan togel 4D on dengan peluang jackpot maxwin