1. A mirage occurs because of
2. Optical fibres are based on the phenomenon of
3. The angle between the ________ and the incident ray is called the angle of incidence.
4. A periscope works by the principle of
5. A periscope works on the principle of
6. Total internal reflection can not take place when light goes from :
7. A rear-view mirror for driving is
8. The reflector of a search light is a :
9. Optical Fibre technology works on which of these principles of Physics?
10. What is the reason for formation of Mirage in desert?
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