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power 4dTwo 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.Disclaimer: 4D88 is a 4D results site, we never sell 4D, Government licensed lottery are legal in Malaysia, Cambodia & Singapore, Only buy from government approved 4D operator. 4D88 do