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:

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:

1. $n$

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

3. $\frac{1}{n}$

4. $n^{2}$

JEE Main Previous Year Single Correct Question of JEE Main from Physics Work, Energy and Power chapter.

JEE Main Previous Year 2 April 2019

Correct Option: 3

Solution: