GATE (TF) Textile 1997 Question Paper Solution | GATE/1997/TF/07 Question 7 (Textile Engineering & Fibre Science) Birefringence of typical polyester filament is (A)0.18(B)0.12(C)0.16(D)2.0 Answer / Solution Previous Question Next Question Frequently Asked Questions | FAQs GATE Textile Engineering and Fibre Science (TF) Question Papers | GATE Textile Question Answer | GATE Textile Solved Question Papers | GATE Textile Papers | GATE Textile Answer Key