A double-convex lens of power 4 D is manufactured from a glass

power 4dTwo lenses have power of (i) + 2 d (ii) -4D. What is the nature and focal length of each lens? b. An object is kept at a distance of 100 cm from lens of power -4D. Calculate the image distance.SDTOTO menyediakan berbagai link alternatif login untuk bermain slot gacor hari ini server luar negeri dan togel 4D on dengan peluang jackpot maxwin