Q. What idea does numerical aperture give ?
:- Numerical aperture of the optical fibre is a measure of the light gathering power of the fibre and determines the angle of the "light acceptance cone'' at the input end of the fibre.
:- Numerical aperture of the optical fibre is a measure of the light gathering power of the fibre and determines the angle of the "light acceptance cone'' at the input end of the fibre.
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