To determine the Young's modulus of a wire, the formula is Y = \(\frac{F}{A}\) x \(\frac{L}{\Delta L}\); where L = length, A = area of cross section of the wire, \(\Delta L\) = change in the length of the wire when stretched with a force F. the conversion factor to change it from CGS to MKS system is :
Answer & explanation
Correct answer: option 3
Y = \(\frac{F}{A}\) x \(\frac{L}{\Delta L}\)
= \(\frac{dyne}{cm^2}\)
= \(\frac{10^{-5}N}{10^{-4}m^2}\)
= 0.1 N/m2