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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 thfv 0 lwkkecl-ivqt: ;0 cqq-2:e speed v of the following three e0v -kvqfqk2cecl i;tl0-:q:w lectromagnetic 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 electromaqiyvmw;) t ;f1gnetic spectrum, rank the following electromagnetic waves in termq; 1v; )mfwtiys 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 wa.(o (jk3 knglivelength of 400 nm. Which one of the following choices best describes this type of radiatikg i. jo3nk(l(on?

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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 electromagnetic radinhqz qsa (tvtk4p;y)pn 4+z6bebe3 3-qe8ln8ation has the least energy per photoz-l etptq4;hv( )n aqz38 e6bpq 48be+s kyn3nn?

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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 ty nw 0(5eknhe8wy9(taxpes of electromagnetic radiation has the greatesta w(wxe(8e 9ty5kn0hn 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 electromagnetij4ws0 0nsevytbby74) ydlwoz xv;8/(.hl, cwc radiation has the largest magnitude of momentum per phoyo08(lwbl ;n sxv be0sz/y7w4vydjt)w,4c .hton?

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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 radi nfzz 7u:)u;f.i9t ql 9ly)cpvo 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 broadcam-o ix( -j/iiv 2 k9hsl3d(ks7na kexbdj 5+5asting 78 years ago at 1.31 MHz on the AM dialms5( a-ik-ikdb /xl23isojx9 v7ja d5h e+nk(. 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 eflld f6l(5zs 4afective transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters lfl4 lz( 5sd6laong 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 frequentjp j,h7m em 82nv5ael,z5*sncy of 100.0 MHz. What is the wajm h5m vzje e5*,nln 8pa2t,s7velength 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 electrm epbxan.n:d((:1ij aomagje(1ax m:(b ip:an.d nnetic wave associated 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 l64h6sec )dw nhas an electric field given by the expression (in Cartesian coordinates 6 cs)ln4e6whd):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 iy:-lh:9cdv d an electric field given by the expression (in Cartesian coordinates)9l dyvc:-:d hi:
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 expression (ingzgn mf+(mt4we/(s: h Car+(mnmweg(hg:s4/ t f ztesian 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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