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a small object is placed 20cm in front of a block of glass 10cm thick and its farther side silvered. the image is formed 22cm behind the silvered face. find the refractive of glas

Answer» a small object is placed 20cm in front of a block of glass 10cm thick and its farther side silvered. the image is formed 22cm behind the silvered face. find the refractive of glas


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