question_answer 55)

  Three immiscible liquids of densities d1> d2> d3 and refractive indices  ( are put in a beaker. The height of each liquid column is A dot is made at the bottom of the beaker. For near normal vision, find the apparent depth of the dot.

Answer:

                  Here, real depth of the dot under liquid of density d1 is h/3. If x1 is its apparent depth, when seen from air then from             or            Similarly, apparent depths of the dot when seen from air through two other liquids are              and         Apparent depth of the dot seen from air through the three liquids is