Practicing Success
a b c $n_1 > n_2$ |
$n_1 > n_2$ |
In an optical fibre, the inner core is more dense than the cladding. The function of the cladding is to provide a lower refractive index at the core interface in order to cause reflection within the core so that light waves are transmitted through the fiber. so $n_1 > n_2$ |