Question

if Young's modulus of iron be 2 into 10 ^ 11 Newton per metre squareand interatomic distance be 3 into 10 ^ - 10, the interatomic force constant will be
1)60N/m 2)120N/m 3)30N/m
4)180N/m

Answer 1

correct answer 1) 60N/m

Answer 2

Answer:

The inter atomic force constant is 40 N/m

Explanation:

The young's modulus is $Y=2\times 10^{11}\ N/m^2$

The inter atomic space is $r=3\times 10^{-10}\ m$

We know that the inter atomic force constant K will be

$K=Y.r\\K=2\times 10^{11}\times 3\times 10^{-10}\\K=60\ N/m$