Question

A metallic ring of radius 2cm and cross
sectional area 4cm² is fitted into a wooden
circular disc of radius 4cm. If the Young's
modulus of the material of the ring is2 x 1011N/
m², the force with which the metal ring
expands is:
1) 2 x 107N
2) 8 x 10°N
3) 4 x 10'N
4) 6 x 107N​

Answer 1

Answer will be option no 2