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In an isotropic medium, the coefficients...

In an isotropic medium, the coefficients of linear expansion of a solid are `alpha_(1), alpha_(2) and alpha_(3)` in three mutually perpendicular directions. The coefficient of volume expansion for the solid is

A

`alpha_(1)-alpha_(2) + alpha_(3)`

B

`(alpha_(1) + alpha_(2) + alpha_(3))/(3)`

C

`alpha_(1)+ alpha_(2) + alpha_(3)`

D

None of these

Text Solution

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The correct Answer is:
C
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