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Physics
A wire obeys Hooks law is of length 11 when it is in equilibrium under a tension F1. Its length becomes 12 when the tension is increased to F2. The energy stored in the wire during this process is____________________?
A
(F1+F2) (121+122)
Option A
B
(F1+F2) (122-112)
Option B
(F1+F2) (12-11)
Correct answer
D
(F1+F2) (12-11)
Option D
Correct answer: C
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