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
105. A periscope works on 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?
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