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Q4 A lever of length 100 cm has effort of 15 kgf at a distance of 40 cm from the fulcrum at one end ...
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A converting lens of power 100 dioptre is used as a simple microscope. What is its magnifying power, if the distance of distinct vision is 25 cm.
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Vector Simple Transparent School Ruler Isolated on White Background Stock Vector - Illustration of school, object: 146635336
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