Q
Critical angle of electromagnetic radiation takes place if__________________?
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A
A. Angle of incidence is equal to angle of refraction
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B
B. Angle of incidence is greater than the angle of refraction
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C
C. Angle of incidence is equal to 90°
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D
D. Angle of refraction is equal to 90°
Correct Answer:
D. D. Angle of refraction is equal to 90°
