A.如图:墙上出现手影﹣手挡住了光沿直线传播的路径 |
B.如图:从不同角度能看见光屏上的实像﹣光发生镜面反射 |
C.如图:平行光经凹透镜后的现象﹣凹透镜对光有发散作用 |
D.如图:小明通过平面镜看到小猫,同时小猫通过平面镜也看到小明﹣﹣反射时光路可逆 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2