**Question:**

**A spring whose unstretched length is $l$ has a force constant $k$. The spring is cut into two pieces of unstretched lengths $I_{1}$ and $l_{2}$ where, $l_{1}=n l_{2}$ and $n$ is an integer. The ratio $k_{1} / k_{2}$ of the corresponding force constants, $k_{1}$ and $k_{2}$ will be:**

$n$

$\frac{1}{n^{2}}$

$\frac{1}{n}$

$n^{2}$

Question of from chapter.

JEE Main Previous Year 2 April 2019

Correct Option: 3

**Solution:**