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The adjacent graph shows the estension (...

The adjacent graph shows the estension `(Deltal)` of a wire of length 1m suspended from the top of a roof at one end and with a load W connected to the other end. If the cross-sectional area of the wire is `10^-6m^2`, calculate the Young's modulus of the material of the wire.

A

`2xx10^(11) N//m^(2)`

B

`2xx10^(-11) N//m^(2)`

C

`3xx10^(-12) N//m^(2)`

D

`2xx10^(-13) N//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Y = (F//A)/(Delta l//l) = (F)/(A) xx (l)/(Delta l) = (20xx1)/(10^(-1)xx10^(-4)) = 2xx10^(11) N//m`
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