The ratio of $\frac{P_{2}}{P_{1}}$ is

Question

With one fixed end and other free end, a column of length L buckles at load $P_{1}$. Another column same length and same cross – section fixed at both ends buckles at load $P_{2}$. The ratio of $\frac{P_{2}}{P_{1}}$ is

(a) 1       (b) 2         (c) 4       (d) 16