The angle formed by an ultrasonic wave as it enters a medium of differ – McqOptions

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1.	The angle formed by an ultrasonic wave as it enters a medium of different velocity than the one from which it came and a line drawn perpendicular to the interface between the two media is called:
A.	The angle of incidence
B.	The angle of refraction
C.	The angle of diffraction
D.	The angle of reflection
Answer» C. The angle of diffraction

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