Calculate the refracted shear wave angle in aluminium [VS = 0.31cm/microsec] for an incident longitudinal wave of 43.5 degrees in Plexiglas [VL =0.267cm/microsec]

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Q. Calculate the refracted shear wave angle in aluminium [VS = 0.31cm/microsec] for an incident longitudinal wave of 43.5 degrees in Plexiglas [VL =0.267cm/microsec]

(A) 53 degrees
(B) 61 degrees
(C) 42 degrees
(D) 68 degrees

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✅ Correct Answer: (A) 53 degrees

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