Young's modulus of steel is $2.0\times {10}^{11} \mathrm{N}/{\mathrm{m}}^2$. Express it in ${\text{ dyne/cm }}^2\text{. }$

• A

  $2.0\times {10}^{15}\text{ dyne }/{\mathrm{cm}}^2$

• B

  $2.0\times {10}^{14}\text{ dyne }/{\mathrm{cm}}^2$

• C

  $2.0\times {10}^{13}\text{ dyne }/{\mathrm{cm}}^2$

• D

  $2.0\times {10}^{12}\text{ dyne }/{\mathrm{cm}}^2$