AP Physics 2hardmcq1 pt
For water (n = 1.33) to air, the critical angle is about
A.49°
B.41°
C.30°
D.90°
Explanation
Core Concept
sinθ_c = 1/1.33 = 0.752, so θ_c ≈ 48.8°.
Correct Answer
A49°
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