Q .     A wire of length `l` m and area of cross-section `2 xx 10^6 m^2` is suspended from the top of a roof at one end and a load of 20 N is applied at the other end. If the length of the wire is increased by `0.5 xx 10^-4` m. its Young's modulus is

JEE 2003 Prelims
A

`2 xx 10^9 N-m^- 2`

B

`2 xx 10^10 N-m^- 2`

C

`2 xx 10^11 N-m^- 2`

D

`2 xx 10^12 N-m^- 2`

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