Question

A wire of diameter 3mm and length im extends by 2.5 mm when a force of ION is applied. find the young's modulus of material of wire​

Answer 1

Answer:

Correct option is

C

0.085mm

L=2m,

d=3mm,A=49π×10−6m2

ΔL=49π×10−6×101130×2=8.48×10−5m=0.085mm