Question

what are the fibre if it smell like yarn melts on burning?

Answer 1

if the yarn melts in the flame ,it is a synthetic fibre such as nylon and acrylic

Answer 2

Answer:

Explanation:Suppose that light from the yellowregion of the spectrum, with awavelength of say 580 nm, arrives at the retina. It lies between that of red(say 620 nm) and green (550 nm), so this light stimulates both red and green photoreceptors. This evokes a sensation that we are taught to callyellow.