In the experiment to trace the path of a ray of light through a triangular prism,

1. A student is asked to draw the boundary of the prism , why?


2. If the angle of incidence is 30, what can be the measure of the angle of incidence at minimum deviation ?


1. It ensures that prism is always kept within this boundary during the experiment.


2. At the minimum deviation condition,


The angle of emergence= angle of incidence



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