Two magnifying glasses are for sale at a store. Magnifying glass 1 has a 4-in. diameter with
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Two magnifying glasses are for sale at a store. Magnifying glass 1 has a 4-in. diameter with a long focal length, and glass 2 has a 1-in. diameter with a short focal length.
(a) Which magnifying glass should you purchase if you wish to examine tiny insects? Explain.
(b) Which glass should you purchase if you wish to start a campfire using sunlight? Explain.
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