Concept explainers
To Explain: The critical angle.
Explanation of Solution
Introduction:
An angle which causes a light ray to bounce back in the same medium from which it was incident at the boundary of two medias is known as critical angle.
When the incidence angle is greater than or equal to critical angle, the incident ray undergoes total internal reflection. At incidence angle which is equal to critical angle, the refracted lies along the boundary of the two medias which means angle of refraction is
Conclusion:
Thus, angle of incidence would be smaller than the angle of refraction.
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