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Length of a wire is doubled, when 20 xx ...

Length of a wire is doubled, when `20 xx 10^(8) N//m^(2)` stress is applied on it. Its Young’s modulus of elasticity in N/m2 will be

A

`20 xx 10^(8)`

B

`20 xx 10^(9)`

C

`20 xx 10^(10)`

D

`10 xx 10^(8)`

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