A.若蜡烛放置在10厘米刻度线处,移动光屏,在光屏上都不能呈清晰的像 |
B.若蜡烛放置在30厘米刻度线处,移动光屏,可在光屏上呈清晰缩小的像 |
C.若蜡烛放置在35厘米刻度线处,移动光屏,可在光屏上呈清晰放大的像 |
D.若蜡烛放置在45厘米刻度线处,移动光屏,可在光屏上呈清晰放大的像 |
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