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the coeffiecient of linear of a crystal in one dirn is a1 and that in every dirm perpendicuar a2 .the coefficient of cubical expansion is: a)a1+a2 b)2a1+a2 c)a1+2a2 d)none of these


the coeffiecient of linear of a crystal in one dirn is a1 and  that in every dirm perpendicuar a2 .the coefficient of cubical expansion is:


a)a1+a2          b)2a1+a2   c)a1+2a2          d)none of these


Grade:9

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