- Light rays from the pebble travel from water (denser medium) into air (rarer medium). - When light travels from a denser to a rarer medium, it bends away from the normal at the interface. - When an observer views the pebble from above, their brain traces the refracted rays back in a straight line. These apparent straight lines intersect at a point higher than the actual position of the pebble. - This makes the pebble appear at a shallower depth, or nearer to the surface.
If we observe a pebble in a pool, the pebble would appear to be
Asked in MPSC CS Prelims 2016 · Topic: Optics (Reflection and Refraction at plane and spherical surfaces)
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