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[" Dlance-conve" lens of refiactive inde...

[" Dlance-conve" lens of refiactive index "1.5" and radius of curvature "30cm" is silvered at the curved surface."],[" "IIn.Ill is lens has been used to form the image of an object.At what distance from this lens,a a a soject "],[" placed in order to have a real image of the size of the object? "],[[" 20"cm," (2) "30cm," (3) "60cm]]

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