The density of a substance at 00C is 10g/cc and at 1000c in its density is 9.7 g/cc. The coefficient of linear expansion of the substance is

The coefficient of volume expansion is given by      γ = ∆ρρ1×∆Twhere ρ1 is density, T is temperature       γ = ρ1-ρ2ρ1(T2-T1)           = 10-9.710(100-0) = 3×10-4Coefficient of linear expansion isα = γ3 = 3×10-43= 10-4