raju focused the image om candle flame on a white screen using a convex lens . he noted the position of the candle aa 26.0cm, the position of the convex lens 50.0 and the position of the screen aa 74.0cm what will ne its focal length ?( im case of decimal values , round off the answers till 2decimal points only)
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i don't noooooooooooooooooooooooooooo
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