An optical fibre consists of core of n surrounded by a

Last updated: 6/2/2023

An optical fibre consists of core of n surrounded by a cladding of n2 ni A beam of light enters from air at an angle a with axis of fibre The highest a for which ray can be travelled through fibre is 2 2 a cos n n 2 b sin n n c tan n n 2 2 d sec n n O n M