Refraction through angled plastic slab · CAP 2004 #Q16
Physics · optics
Problem
An observer at O views two closely spaced lines on the bottom sheet through an angled slab of plastic with parallel faces, exactly as shown in the figure below.
[Figure: Shows observer O looking through angled plastic slab at lines on sheet, with arrow pointing right]
Compared to when there is no plastic, the lines appear to the observer
(a) the same but shifted to the right;
(b) shifted to the left and spaced further apart;
(c) shifted to the right and spaced closer together;
(d) exactly as they do without the plastic slab.