maybe I should have worded it differently
how about "Out of these possible answers which ones give the ideal wavelength for propagation in optic fibres?"
I was asked this question
Why is there an ideal wavelength for propagation in optic fibres?
a. Light absorption losses are minimum
b. The fibre has its greatest transparency at the ideal wavelength
c. Rayleigh scattering is greatest at this wavelength
d. Total internal reflection...