A thin convex lens made from crown glass `(mu=(3)/(2))` has focal length f. When it is measured in two different liquids having refractive indices `(4)/(3)` and `(5)/(3)`, it has the focal lengths `f_1` and `f_2` respectively . The correct relation between the focal lengths is ,

Options

A. `f_(2) gt f` and `f_(1)` becomes negative
B. `f_(1)` and `f_(2)` both become negative
C. `f_(1) = f_(2) lt f`
D. `f_(1) gt f ` and `f_(2)` becomes negative

Answer

D