How will you daride whether a gaven
piece & glass as Convex, Concare lens or
a plane Mirror ?
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Hold the given piece of glass over some printed matter.
(i) If the letters appear magnified, the given piece is a convex lens.
(ii) If the letters appear diminished, the given piece is a concave lens.
(iii) If the letters appear to be of the same size, then it is a plane glass piece.
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