The coefficient of linear expansion of a crystalline substance in one direction is 2x10^-4/•Cand in every direction perpendicular to it is 3x 10^-4/•C
the coefficient of cubical expansion of the crystal is

Question

The coefficient of linear expansion of a crystalline substance in
one direction is 2x10-4/•Cand in every direction
perpendicular to it is 3x 10 -4/•C
​the coefficient of cubical expansion of the crystal is

Vara · Accepted Answer

The cubical expansion of the crystal is equal to the sum of
coefficient of linear expansions in three mutually perpendicular
directions

γ=αx+αy+αz   =2×10-4+3×10-4+3×10-4    =8×10-4 /oC

The coefficient of linear expansion of a crystalline substance in one direction is 2x10-4/•Cand in every direction perpendicular to it is 3x 10 -4/•C​the coefficient of cubical expansion of the crystal is

The coefficient of linear expansion of a crystalline substance in one direction is 2x10^-4/•Cand in every direction perpendicular to it is 3x 10^-4/•C
the coefficient of cubical expansion of the crystal is