A wire of length 3 m and cross-section 5 10^-6 m^2 extends by 3 mm under 1000 N. The Young modulus is:

  1. 2 10^11 Pa
  2. 4 10^11 Pa
  3. 2 10^10 Pa
  4. 2 10^12 Pa
Answer

A) 2 10^11 Pa

Y = F/Ae/l = FlAe = 2 10^11 Pa. SLO P-11-B-24 · Application

Physics MCQ · More Deformation of Solids MCQs · Practise