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If an isotropic solid has coefficients o...

If an isotropic solid has coefficients of linear expansion `alpha_(x),alpha_(y) and alpha_(z)`for three mutually perpendicular directions in the solid, what is the coefficient of volume expansion for the solid?

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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