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A transparent hemisphere of refractive index 1.5 and radius of curvature 20 cm is placed flat side down on a piece of paper with a 4.0 mm tall letter G written on it such that G is in the center.What is the size of G when viewed directly from above
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an elevator weighing 2000N attains an upward velocity of 16m/s in 4second with uniform acceleration.How much force is be exerted inxesting table?
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