Keputusan 4D Malaysia - Sports Toto, Magnum, Damacai (Kuda) - Dato 4D

power 4dThe power of a lens is +4D. Find the focal length of this lens. An object is placed at a distance of 50 cm from the optical centre of this lens. State the natureTo find the effective power of a combination of a convex lens and a concave lens, we can follow these steps: 1. Identify the Powers of the Lenses : - The power of the convex lens (P1) is given