Question

A plano-convex lens of focal length 10 cm is silvered at its plane
surface. The distance d at which an object must be kept in order
to get its image on itself is
(A) 5 cm
(B) 20 cm
(C) 10 cm
(D) 2.5 cm

Answer 1

Answer:

that the answer of your question is 10 centimetre