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The Young's modulus of steel is 1.9 xx 1...

The Young's modulus of steel is `1.9 xx 10^(11) Nm^(-2)` . Calculate its value in dyne `cm^(-2)`.

A

`1.9xx10^(10)`

B

`1.9xx10^(11)`

C

`1.9xx10^(12)`

D

`1.9xx10^(13)`

Text Solution

Verified by Experts

The correct Answer is:
C
Given `1 N= 10^(5)` dyne
and `1m^2= 10^(4) Nm^(2)`
Young.s modulus, `Y=1.9xx10^(11)N m^(2)`
`=1.9xx10^(11)xx(10^5 "dyne")/(10^(4)cm^(2))`
`=1.9xx10^(12) "dyne/"cm^(2)`.
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