101.
A mirage occurs because of

102.
Optical fibres are based on the phenomenon of

103.
The angle between the ________ and the incident ray is called the angle of incidence.

104.
A periscope works by the principle of

106.
Total internal reflection can not take place when light goes from :

107.
A rear-view mirror for driving is

108.
The reflector of a search light is a :

109.
Optical Fibre technology works on which of these principles of Physics?

110.
What is the reason for formation of Mirage in desert?