9. The coefficient of linear expansion of a crystallinesubstance in one direction is 2 x 10-41°C and inevery direction perpendicular to it is 3 * 10-4/°C.The coefficient of cubical expansion of crystal isequal to(1) 5 x 10-41°C(2) 4 x 10-41°C(3) 8 x 10-41°C(4) 7 * 10-41°C

9. The coefficient of linear expansion of a crystallinesubstance in

1.	9. The coefficient of linear expansion of a crystallinesubstance in one direction is 2 x 10-41°C and inevery direction perpendicular to it is 3 * 10-4/°C.The coefficient of cubical expansion of crystal isequal to(1) 5 x 10-41°C(2) 4 x 10-41°C(3) 8 x 10-41°C(4) 7 * 10-41°C
Answer» cExplanation:The cubical EXPANSION of the crystal is EQUAL to the sum of coefficient of linear expansions in three mutually perpendicular directions. y= Ax + Ay + Az = 2 x 10-4 + 3 x 10-4 + 3 x 10-4 = 8 x 10-41

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9. The coefficient of linear expansion of a crystallinesubstance in one direction is 2 x 10-41°C and inevery direction perpendicular to it is 3 * 10-4/°C.The coefficient of cubical expansion of crystal isequal to(1) 5 x 10-41°C(2) 4 x 10-41°C(3) 8 x 10-41°C(4) 7 * 10-41°C​

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9. The coefficient of linear expansion of a crystallinesubstance in one direction is 2 x 10-41°C and inevery direction perpendicular to it is 3 * 10-4/°C.The coefficient of cubical expansion of crystal isequal to(1) 5 x 10-41°C(2) 4 x 10-41°C(3) 8 x 10-41°C(4) 7 * 10-41°C