51. What is the critical angle when a ray passes from diamond into air? The index of refraction for air and diamond is 1.00 and 2.42,
respectively.
(A) 0°
(B) 24°
(C) 30°
(D) 36°
(E) 66°
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統計: A(2), B(52), C(1), D(4), E(2) #2356612
統計: A(2), B(52), C(1), D(4), E(2) #2356612