The ratio of displacement in $n$ second and in the $n^{th}$ second for a particle moving in a straight line under constant acceleration starting from rest is
The ratio of displacement in $n$ second and in the $n^{th}$ second for a particle moving in a straight line under constant acceleration starting from rest is
- A
$\frac{2n -1}{n^2}$
- B
$\frac{1}{n}$
- C
$\frac{n^2}{n-1}$
- D
$\frac{n^2}{2n-1}$
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