Geometrical OpticsEasy
Question
A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. If the distance between parallel walls is ′d′ then required focal length of lens placed in between the walls is :-
Options
A.Only d/4
B.Only d/2
C.More than d/4 but less than d/2
D.Less than or equal to d/4
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