Atank holds a 1.44-m thick layer of oil that floats on a 0.96-m thick layer of brine. both liquids are clear and do not intermix. point o is at the bottom of the tank, on a vertical axis. the indices of refraction of the oil and the brine are 1.40 and 1.52, respectively. a ray originating at o reaches the brine-oil interface at the critical angle. what is the distance of this point from the axis?