optical communication quuiz

If a light travels in a certain medium and it gets reflected off an optically denser medium with high refractive index, then it is regarded as _______

• External Reflection

• Internal Reflection

• Refraction

• Both a and b

The wavelength region used in second window

• 800 to 900 nm

• 1100 to 1350nm

• 1500 to 1650nm

• 1200 nm to 1400 nm

The core of the optical fibre is

• opaque and conducting material.

• opaque and dielectric material.

• transparent and conducting material.

• transparent and dielectric material.

• 0.298

• 1.45

• 6

• 0.22

Refractive index of cladding is

• Higher

• Lower