Physics - Geometrical Optics Question with Solution | TestHub

(A) and (B): The object is at the focus of the convex lens, so the beam after the lens is parallel. A parallel-sided slab produces only a lateral shift and the emergent beam remains parallel, so no finite image I is formed; both diagrams showing the rays converging to I are incorrect. (C) The parallel beam from the first lens enters the diverging lens and emerges diverging as if from its front focal point F, as drawn. (D) is consistent with the ray rules as drawn. Hence the incorrect ray diagrams are (A) and (B).