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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 relationship for the speed v of the fos;g:c,b k /j6t(6xhsk4qy sakllowing three electromagnet6 b/t,4s:k;(sj6 qsgk yh acxkic 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 spectrum, rank 1z r46q8do,qso wh:uz the following electromagnetic waves in8,w qdhu6 szro:z4q1 o terms 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 wavelength p7:mkfpsm eicd h/8 ,(of 400 nm. Which one of the following choices best describes this p(i7emdph, /:k f cs8mtype 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 followinghykl5mo,6b3 x:a .ezr types of electromagnetic radiation has the least energyyx ,emlk.o:h6 a35 zrb 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 of electromagnetic radiation has the greatesgw 2qtf;/hml2 t energy per2fwhlqt ; /2mg 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 /urfs9qr;f:3 i,kz.;gs ao cntypes of electromagnetic radiation has the largest magnitude of mo sg fu3 ;q,/r9onkcr;.i:fazs mentum 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.dpbjwyf *j: v3d4l8 o027 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 broadcasting 78 years aw+4fn8 myrel1 go at 1.31 MHz on the AM +nm 4r18flewy 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 effective transo yhr;4q6 b73p tkfk(xmitting 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 frequencxqrf4ob3 hkk6y;7t p(y 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 frequency of 100.0 MHz. What f+nq 55m6iz zlmm+n2wc k/i:zis th m2 :+wmi+z6ckzizm n5 5nl/qfe wavelength 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 choic,d( d2(mqh*8+ mxh vm3oluwbres best represents the type of electromagnetic wave associate h+mxbl d,*uwv2((hmm8o q3drd with a 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 jhnn j0:atg1lo3bwgs *.lh 6*expression (in Cartesian coordin gjhla sh 60*.1jbl:3gnwtn* oates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 expresspor 7 4wvyy4f2ion (in Cartesian coordinates): 4 of pyr7y24wv
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 wave has a magnetic field given by the expressid/e tvm 2znmoz9/s 6zolh71oar3i+: fon (in Cartesiaz 39omdim zz/rsh6o2f/v 1+ :7otelnan coordinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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总分:14分 及格:8.4分 时间:不限时
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