Power (P) of a lens is given by reciprocal of focal length (f) of

power 4dA convex lens of power 4D is kept in contact with a concave lens of power 3D, the effective power of combination will be . View Solution; The power of a concave lens is 10 D and that of aPresentation on theme: The 4 Discips of Execution (4DX)— Presentation transcript: 1 The 4 Discips of Execution (4DX) Discip 1: Focus on your Wildly Important Goals (Ws) Set only 1 or 2 measurable, achievable goals