Physics Elasticity Question 82
Question: If Young’s modulus of iron is $ 2\times 10^{11},N/m^{2} $ and the interatomic spacing between two molecules is $ 3\times {{10}^{-10}} $ metre, the interatomic force constantis
[JIPMER 1978]
Options:
A) 60 N/m
B) 120 N/m
C) 30 N/m
D) 180 N/m
Show Answer
Answer:
Correct Answer: A
Solution:
Interatomic force constant $ K=Y\times r _{0} $
$ =2\times 10^{11}\times 3\times {{10}^{-10}}=60\ N/m $
BETA
