A) \[\frac{3}{4}k\]
B) \[\frac{4}{3}k\]
C) \[k\]
D) \[4k\]
Correct Answer: B
Solution :
\[k\propto \frac{1}{l}\] Since, one-fourth length is cut away. So remaining length is\[\frac{3}{4}\]th, hence k become\[\frac{4}{3}\]times ie, \[k=\frac{4}{3}k\].
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