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A spring whose unstretched length is l has a force constant k. The spring is cut into two pieces of unstretched lengths l 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 constant, k 1 and k 2 will be ;

1. 2 n 1
2. n 1
3. n 2
4. n

Correct answer: n 1

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