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Question
What's is a critical angle?
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Solution
The angle of incidence for which the angle of refraction is 90 degrees is called as the critical angle.
The critical angle is the angle of incidence above which the total internal reflection occurs. This is particularly common as an optical phenomenon, where light waves are involved, but it occurs with many types of waves, such as electromagnetic waves in general or sound waves. If the angle of incidence is more than the critical angle, total internal reflection occurs.
The critical angle is the angle of incidence above which the total internal reflection occurs. This is particularly common as an optical phenomenon, where light waves are involved, but it occurs with many types of waves, such as electromagnetic waves in general or sound waves. If the angle of incidence is more than the critical angle, total internal reflection occurs.
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