A particle is dropped from rest from a large height. Assume g to be constant throughout the motion. The time taken by it to fall through successive distances of 1 m each will be 

All equal, being equal to $\sqrt{2/g}$ second 

In the ratio of the square roots of the integers 1,2,3, . . .. 

In the ratio of the difference in the square roots of the integers, i.e., $\sqrt{1},(\sqrt{2}-\sqrt{1}),(\sqrt{3}-\sqrt{2}),(\sqrt{4}-\sqrt{3}),\dots$

In the ratio of the reciprocals of the square roots of the integers, i.e., $\frac{1}{\sqrt{1}},\frac{1}{\sqrt{2}},\frac{1}{\sqrt{3}},\dots$