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

power 4dWith intuitive scheduling, 4D BIM integration, a mobile app, and resource management features, it is used on projects of all sizes, empowering better project outcomes. Free Trial . WatchTwo 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.