At what distance from a nickel should you hold this lens

Reference no: EM1392790

Q. A magnifying glass has a converging lens of focal length of 16-cm. At what distance from a nickel should you hold this lens to get an image with a magnification of +2.46?

Q. One of the concrete pillars that support a house is 2.5-m tall and has a radius of 0.50 m. The density of concrete is about 2.3 x 10^3 kg/m3. Find out weight of this pillar in pounds (1 N = 0.2248 lb)

Reference no: EM1392790

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