Physics Elasticity Question 60
Question: The ratio of Young’s modulus of the material of two wires is 2 : 3. If the same stress is applied on both, then the ratio of elastic energy per unit volume will be
Options:
A) 3 : 2
B) 2 : 3
C) 3 : 4
D) 4 : 3
Show Answer
Answer:
Correct Answer: A
Solution:
Energy per unit volume = $ \frac{{{(\text{stress)}}^{r}}}{2Y} $
$ \frac{E _{1}}{E _{2}}=\frac{Y _{2}}{Y _{1}} $ (Stress is constant)\ $ \frac{E _{1}}{E _{2}}=\frac{3}{2} $
BETA
