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Q.

The average value of 'α' for an anisotropic solid is

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a

α=α1+α2+α32

b

α=α1+α2+α34

c

α=α1+α2+α35

d

α=α1+α2+α33

answer is D.

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Detailed Solution

when coefficient of linear expansion is different for 3 different mutually perpendicular directions of solid then their average value is considered
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The average value of 'α' for an anisotropic solid is