The diagram shows a narrow beam of light incident on a glass-air boundary. Some of the light emerges along the surface of the glass and some is reflected back into the glass.
Which row is correct?
this is an example of total internal reflection:no / angle θ is the critical angle:yes
2 )
this is an example of total internal reflection:no / angle θ is the critical angle:no
3 )
this is an example of total internal reflection:yes / angle θ is the critical angle:no
4 )
this is an example of total internal reflection:yes / angle θ is the critical angle:yes
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