Twist (turns per inch) of a cotton yarn of 36 Ne count produced with a twist multiplier of $3.5 inch-1. Ne-0.5 is

The diameter (mm) of a yarn having twist of 700 turns per meter and surface-twist angle of 20° (rounded off to 2 decimal places) is _________.

The ratio of yarn tensile modulus to fibre tensile modulus, where the surface fibres are inclined at a twist angle of 25°, (rounded off to 2 decimal places) is...