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Figure shows the strain - stress curve f...

Figure shows the strain - stress curve for a given material. The Young's modulus of the material is

A

`5xx10^(9)" N m"^(-2)`

B

`5xx10^(10)"N m"^(-2)`

C

`7.5xx10^(9)" N m"^(-2)`

D

`7.5xx10^(10)" N m"^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
D
From the given graph for a stress of `150xx10^(6)" N m"^(-2)` the strain is `0.002`.
`:.` Young.s modulus `Y=("Stress")/("Strain")`
`Y=(150xx10^(6))/(0.002)" N m"^(-2)=7.5xx10^(10)" N m"^(-2)`
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