A thin convex lens made from crown glass (\mu+3/2) has focal length f. When it is measured in two different liquids having reractive indices 4/3 and \sqrt{3/2}, it has the focal lengths f_1 and f_2 respectively. The correct relation between the focal lengths is

Correct Answer is : f1 > f and f2 becomes negative

f_2 > f and f_1 becomes negative

both f1 and f_2 become negative