河南省平顶山市2022-2023高一下学期期末调研物理试卷+答案

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10.如图所示,△ABC10.,△ABC是一直角三棱镜的横截面,∠A=30°,∠B=90°。一细光束从AB边上的A=30^,B=90^。45^D点以与AB边成45°角射入三棱镜,AD长度为a,AC长度为23a,三棱镜的折射率n=23a,2,c,√2,光在真空中的传播速度为c,不考虑多次反射。下列说法正确的是A光光在AC边上一定发生全反射光在BC边上可能发生全反射.光在三棱镜中发生全反射的临界角为30°30^D.光在三棱镜中传播的时间为52a2c

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