Punya Daya Tahan Lebih, Power Amplifier Hertz HMP 4D Jadi
power 4d6. A convex lens of power +6 D is placed in contact with a concave lens of power –4D. What will be the nature and focal length of this combination ? (a) convex, 100 cm (b) convex, 50 cmHMP 4D memiliki 4