a convex lens of power 4d is placed at a distance of 40cm

power 4dA convex lens of power + 6D is placed in contact with a concave lens of power – 4D. What is the nature and focal length of the combination. see full answer. Start JEE NEET FoundationVIP POWER 4D MKTHE > · Join group. About this group. AKI AKI SCAMER TAK BOLEH COPY CARTA & NOS ORANG LAIN.