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  4. If Young's modulus of iron be 2 × 1011N/m-2 and interatomic distance be 3 ×10-10m-2, the interatomic force constant will be

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Q. 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

Mechanical Properties of Solids

Solution:

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