$A$ simple spring has length '$l$' and force constant '$K$'. It is cut into two springs of length '$l_1$' and '$l_2$' such that $l_1 = n l_2$ ($n$ is an integer). The force constant of the spring of length '$l_1$' is:

  • A
    $K(1+n)$
  • B
    $\frac{K(n+1)}{n}$
  • C
    $K$
  • D
    $\frac{K}{(n+1)}$

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