A biconvex thin lens is prepared from glass 1 5 the two bounding surfaces having equal radii of 25 cm each One of the surfaces

Question

A biconvex thin lens is prepared from glass 1 5 the two bounding surfaces having equal radii of 25 cm each One of the surfaces is silvered from outside to make it reflecting An object is placed before this lens at distance 1 cm so that the image is formed on the object itself The value of 20 is Lens is placed in air u 1 5 C 25cm B 25cm C

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