If refractive index of core & cladding are `mu_(1)` & `mu_(2)` respectively then :

Speed of light through two media of refractive indices mu_(1) and mu_(2) are u_(1) and u_(2) respectively, then

The refractive indices of three media 1,2 and 3 and mu_(1),mu_(2) and mu_(3) respectively (mu_(1) gt mu_(2) gt mu_(3)) . Which of the following statements are correct?

If mu_(1) and mu_(2) are the refractive indices of the material of core and cladding respectively of an optical fiber, then

If mu_(1) and mu_(2) are aboslute refractive index of medium 1 and medium 2 respectively, then

If mu_(1) and mu_(2) are aboslute refractive index of medium 1 and medium 2 respectively, then

The refractive index of the core of an optical fibre is mu_(2) and that of the cladding is mu_(1) . The angle of incidence on the face of the core of that the light ray just under goes total internal reflection at the cladding is

The refractive index of the core of an optical fibre is mu_(2) and that of the cladding is mu_(1) .The angle of incidence on the face of the core so that the light ray just under goes total internal reflection at the cladding is

For an optical fibre ,the ratio of the refractive index of the core to the refractive index of the cladding is 1.25 . What is the critical angle at the core cladding interface ?

The observer 'O' sees the distance AB as infinitely large. If refractive index of liquid is mu_(1) and that of glass is mu_(2) , then (mu_(1))/(mu_(2)) is : .