The diagram shows a ray of light in air incident on a glass block. Some of the light is refracted and some of the light is reflected. Two angles, p and q, are marked on the diagram.
Which row gives the angle of incidence and states whether total internal reflection occurs?
1 )
angle of incidence:p / total internal reflection:no
2 )
angle of incidence:p / total internal reflection:yes
angle of incidence:q / total internal reflection:no
4 )
angle of incidence:q / total internal reflection:yes
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