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The diameter of a brass rod is 4 mm and ...

The diameter of a brass rod is 4 mm and Young's modulus of brass is `9 xx 10^(10) N//m^(2)`. The force required to stretch by 0.1 % of its length is

A

`3600 pi N`

B

36 N

C

`144 pixx10^(3)N`

D

`36pixx10^(5)N`

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The correct Answer is:
A
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