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习题练习:Wave-EM Wave



 作者: admin发布日期: 2024-07-31 22:50   总分: 14分  得分: _____________

答题人: 匿名未登录  开始时间: 24年07月31日 22:50  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.19: Which is the correct relationshipuca p0o-g v:2o for the speed v of the following three electruao-g :0p vo2comagnetic waves in vacuum? The waves are : X-rays, UV rays, microwaves.

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.15: In the electromagnetic specz2u3ykf/vuog cgy- .(trum, rank the following electromagnetic waves in terms of increasinuv -kzyf y.3c(ougg/2g wavelength

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.06: Electromagnetic radiation d3vp( i df3/hz g1kii:travels through vacuum with a wavelength of 400 nm. Which one of the following choices best describe /f:z13 (iihpk 3dvdgis this type of radiation?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.11: Which of the followip,k- l ko+dnz:0t v2anng types of electromagnetic radiation has the least enerokvzk-,d+p 0l tna:2ngy per photon?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.07: Which of the following types oh7ax:gl73r q pe7 qt7xf electromagnetic radiation has the greatest el 3qxqghe77p 7r: tx7anergy per photon?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.25: Which of the following types of electromagne:a7ca4r9ifvn tic radiation has the largest magra4vaf: n c79initude of momentum per photon?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.04: Which station broadcasts with 3.27 m radio weuw 4t.tz,wl5 aves?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.25: Pioneering radio station KFKA sttee( l6-m 8p gng j8-7sky5sxwarted broadcasting 78 years ago at 1.31 MHz on t ls(-sxmy7e8t p-j 8e5kgnw6ghe AM dial. What is the approximate length of its radio waves?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.07: The length of the most effecti bwi+4d h4vv. dcmd6,sve transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio dsh b6cwi.+vvm , d44dstation has an antenna 4.5 meters long then what is the broadcast frequency of the radio station?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.15: A radio station broadcasts its signal at a hizrc96 a,j8 hfrequency of 100.0 MHz. What is the wavelejhc6z,ih r98a ngth of the station’s signal?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.16: Which one of the following choice)f1l07v , 1gs dxgvonjs best represents the type of electromagnetic wave associated with a 1vnx0fl,d)v7gjg1 os frequency of $10^{18}Hz$?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave has an electric field given by the expression (inasj-w o8 zdn)4 yp9p+f Cartesiay9a4op+-znpjw s8 )df n coordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
09.48: What is the direction of the energy flow for the wave?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electromagnetic wave has an electric field given by the expression (in Carny,n7nc w.d2rxl6ob5 tesian coordinate25,clx yndrb . nno67ws):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
09.49: What is the direction of the magnetic field at time t=0 and position x=0?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  11.48: An electromagnetic wau4kd,a3 x- ,nyovj j9x)1 ezh niw25bqve has a magnetic field given by the expression (in Cartesian coordini)45o1vxj3q x y,edwbk uajn ,-hz92nates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . At t=0 and position x=y=z=0, what is the direction of the electric field associated with this wave?

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