Polarisaton-optics

Optical fibre based on the principle of

• total internal reflection.

• total internal refraction.

• diffraction.

• interference.

Optical fibre based on the principle of

• total internal reflection.

• total internal refraction.

• diffraction.

• interference.

The function of cladding is

• to produce refraction of rays.

• to produce total internal reflections of rays.

• to produce transmission of Ray's.

• to provide a firm support to the core glass.

Single mode fiber is

• one mode

• two mode

• more than one mode

• none

What happens to light during total internal reflection?

• The angle of incidence is greater than the critical angle.

• The angle of reflection is the same as the critical angle.

• The angle of refraction is less than the critical angle.

• The angle of incidence is zero.

What are fibre optics?

• thin, flexible fibres of glass/plastic

• flexible fibers of copper

• strands of rubber

• glow toys

Which type of lens is this?

• opaque

• convex

• concave

• plano

Physical parameters are sensed directly is

• Active sensor

• Intrinsic sensor

• Passive sensor

• Both 1 and 2

The unit of Numerical aperature is

• meter

• degree

• Coulomb per meter

• no unit.

A light wave acting as a carrier wave is capable of carrying

• less information

• more information

• medium information

• No information