On increasing the length by $0.5\, mm$ in a steel wire of length $2\, m$ and area of cross-section $2\,m{m^2}$, the force required is $[Y$ for steel$ = 2.2 \times {10^{11}}\,N/{m^2}]$
  • A$1.1 \times {10^5}\,N$
  • B$1.1 \times {10^4}\,N$
  • C$1.1 \times {10^3}\,N$
  • D$1.1 \times {10^2}\,N$
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