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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 relationship for the speed v6qo3os/,8on4n qi8vkt awt7 a of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, microwavw o7 q/4noi3v6 totak8nqas,8es.

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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 electromagnqo5b c2jws25y.af6 laetic spectrum, rank the following electromagnetic waves in terms of increasing wavelclb o.qy 25aw j6fs5a2ength

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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 witske zqb/01yzb4z(6s,;lqynjsq m 5j:h a wavelength of 400 nm. Which one of the following choices best describes this typels0s z /qqnj,y4 bse5b1;y( k6zz mj:q 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 electromag)hfn; hu51ekm/. umz pnetic radiation has the least ene1uu fphh e;nmk./z)m5 rgy 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 9f lhee2 1ubjsqt*- t;following types of electromagnetic radiation has the greateshfs jb2;ett-* 9que 1lt energy 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 electromagnetic radiaf*y jait mpe4 o8(qp6u)jry4(tion has the largest magna8y6i 4(r*p4yeqjujom)t ( fp itude 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 withckmch0p0ajw9+ n5 b,g 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 broadcasting 78 ,rjn5f1-m 4 v zq-f.cxzggx *eyears ago at 1.31 MHz on the AM dial. What is the approximate length of its radio wavecr- *efgj15.-vf4nz gxm z, qxs?

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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 transmitting antenna is equa gfem+hor )9;uz, t3hsw-;lczl to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 mehz ser gmt) u;-owcf;9 h3+z,lters 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 frequency of 100.0 MHz.pr,o -vaxdpu.m . qs7( What is the wavele-.m.odxar up7 svp( q,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 choices best represents the type of eleh7i 5*q5 fed9ehah 1mfctromagnetic wave associated with a frequency 5fhe*ei5ahd9f mqh17 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 (in Ca/gdfx1 q-8bj:pl /qjlrtesian coordinated/8lqg-b jx/j1qlp :fs):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 fiel2ws0uhwpu+q 0 d given by the expression (in Cartesian coordinates +hwu0 sup2w0q):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 wav);f 6(otdsxuds0y1ire has a magnetic field given by the expression (in Cartesian di( )1torus06f x;sdy 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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