The refractive indices of a filament in axial and radial directions are 1.58 and 1.52 respectively. The birefringence of the filament (correct up to 2 decimal p...

The experimentally determined density of a fibre is 1.31 g/cc. If the density of the void free fibre is 1.35 g/cc, then the void volume fraction (%) of the fibr...

The density of a given polyester filament sample is 1.38 g/cm³. Consider the density of fully crystalline polyester as 1.455 g/cm³ and that of fully amorphous p...