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A metal rod (Y+2xx10^(12)"dyne"(cm)^(-2)...

A metal rod `(Y+2xx10^(12)"dyne"(cm)^(-2))` of coefficient of linear expansion `1.6xx10^(-5)` per `.^(=)C` has its temperature raised by `20^(@)C`. The linear compressive stress to prevent the expansion of the rod is

A

`2.4xx10^(8)"dyne"//(cm)^(-2)`

B

`3.2xx10^(8)"dyne"//(cm)^(-2)`

C

`6.4xx10^(8)"dyne"(cm)^(-2)`

D

`4.6xx10^(8)"dyne"//(cm)^(-2)`

Text Solution

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The correct Answer is:
C
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