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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: 游客未登录  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 relatiokyl42stmp ; p)lss(8 yc9z2.df agi*knship for the speed v of the following three electromagnetic waves in vacuum? The waves are9*lpd(maz f 2ks ksyp. 2l); 4syc8itg : 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 spectrum, rank the following electromagneti2syj) :ej0d/d cfxuh 6c waves in ts/dx6u :y2c fjhe dj0)erms of increasing 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 travels through vacuum with a 0k*fdpvnfg (v9w9besf04jc 4wavelength of 400 nm. W eck fnf 0 jp*g0sf4vwd99b4v(hich one of the following choices best describes 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 following types of electromagnet/xqpz3rmzy3 zl(7 gd1ic radiation has the least energy per rpgzx3m3ql/ 1 (d7 zyzphoton?

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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 of ele.aoe1rm4w9p mry) o-; s -k(sc6fs sqpctromagnetic radiation has the greatest energy per )--.sp 9macepr(w k;msoqs y64fr so1photon?

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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 electromagnetic ra*lnyj e.es+o vt4a(p:53hv x odiation has the largest pa*v.o5 4h+n3e lty (:jeovs xmagnitude 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 withb-4 v*6ajoq4m harm o5 3.27 m radio waves?

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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 started broadcay4s0+ up)gn faqc0p/y sting 78 years ago at 1.31 MHz on the AM dial. What is the approximate lensqycp 0u)0yag+p 4f/ngth 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 mosb40x s- +z 3 asxvg;k/wiwofb4h-yl m)t effective transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then what is the broadcast frequen0zf i k b;msgh+owl 3b-w44sx)-vy/ax cy 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 4ui akn cu ae*gi30z4t7t*gh2 at a frequency of 100.0 MHz. What is the wt0ugcn 4*a*7 3 gzhu4i kaeti2avelength 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 cee7 j:ddyw b01hoices best represents the type of electromagnetic wave associated with a frequenye jde70b1d w:cy 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 expr o vng/m.(eggfc k;- t;s-t2mlession (in Cartesian coordin gn(/got-kg.;mvtsc2 m -l fe;ates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 expr.e nkyynurk 9vtr,p61- (+hzpession (in Cartesian coordinate.+-en( ,kut6 y1khnvzyrr pp9s):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 wave95 gk-v2odckhg01 zjc has a magnetic field given by the expression (in Cartesian coo0 gz5 k29c cjohg1dkv-rdinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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