Question

If Young's modulus of iron be $2 \times 10^{11}N/m^{-2}$ and interatomic distance be $3 \times10^{-10}m^{-2}$, the interatomic force constant will be

• A. 60 N/m
• B. 120 N/m
• C. 30 N/m
• D. 180 N/m

Answer 1

Answer: (A)

60 N/m

Answer 2

$K = Y r_o$ K = interatomic force constant $r_o$ =interatomic distance