question_answer 15)

A small pin fixed on the table top is viewedfrom above from a distance of 50 cm. By whatdistance would the pin appear to be raised if itis viewed from the same point through a 15 cmthick glass slab held parallel to the table ? Refractive index of glass = 1.5. Does the answerdepend upon the location of the slab?  

Answer:

The lateral displacementi.e. For small angles of incidence, the answerdoes not depend upon the location of theslab.