In a wire, when elongation is 2cm, energy stored is E. If it is stretched by 10 cm, then the energy stored will be
In a wire, when elongation is 2cm, energy stored is E. If it is stretched by 10 cm, then the energy stored will be
A. E
B. 2 E
C. 4 E
D. 25 E
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Correct Answer - D
`(E_(2))/(E_(1))=((x_(2))/(x_(1)))^(2)=((10)/(2))^(2)=25`
`E_(2)=25E_(1)`.
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