Question

how long is the fibre it is lustrous or not​

Answer 1

Answer:

Mean fibre length by weight is considered to be a more meaningful quantity than mean fibre length based on fibre number as it represents the fibre length with most of the mass. In contrast the fibre length distribution by fibre number can be distorted by a large number of very short fibres, which have little mass.

Fibers with rougth or irregular cross section shape, such as wool & cotton, are not lustrous even when the light is incident along the fiber longitudinal direction. Fibers with smooth or regular cross-sectional shape, such as silk and some synthetic polymer fibers are lustrous

Explanation:

Answer 2

Answer:fibre is much long and is lustrous

Explanation: