A particular force F applied on a wire increases its length by 2 x 10 -3 m. If we were to increase the wire's length by 4 x 10 -3 m, then the applied force is nF. What is the value of n?
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CHECK THE SOLUTION.
(2)
[ 
= Change in length, L = Original length] (where Y is Young's modulus of elasticity)
Since Y, L and A remain same.
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