题目

已知平面电磁波的电场强度overrightarrow (E)=100overrightarrow (e)ex [ 1,(dfrac (2pi )(300)z-2pi times (10)^6t)] 则A. 波矢沿overrightarrow (E)=100overrightarrow (e)ex [ 1,(dfrac (2pi )(300)z-2pi times (10)^6t)] 轴 B. 频率为overrightarrow (E)=100overrightarrow (e)ex [ 1,(dfrac (2pi )(300)z-2pi times (10)^6t)] C. 波长为overrightarrow (E)=100overrightarrow (e)ex [ 1,(dfrac (2pi )(300)z-2pi times (10)^6t)] D. 波速为overrightarrow (E)=100overrightarrow (e)ex [ 1,(dfrac (2pi )(300)z-2pi times (10)^6t)]

已知平面电磁波的电场强度则

A. 波矢沿轴
B. 频率为
C. 波长为
D. 波速为

题目解答

答案

B. 频率为10^6