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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 1 mqys1fjv:nn t e/5g.relationship for the speed v of the following three electromagnetic waves in vacuuj:tfn1 .s1 n/g y5qvemm? 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 2xek z;bljtw egl2o-,kb r/bic6* x6 4the following electromagnetic waves in terms of incr *b6-o4kl26jel, i xzb2 wkx/cbrgte ;easing 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 wavo wub12;dn0h felength of 400 nm. Which one of the following fw1nu 2dob0h; 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 electromagnetic radiation has the least a)xd)c a1b0qpdf+3stzvb/.veneb) 3vadpsat +/zxdvc 1fb)0.q 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 following types of electromagnetic radiation has the greates* jzfn xlib56mu9x 6hz75f-o 76gne ptt energy7imn 6zl ue5p96xx56-fonbfhjg* t7 z 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 radg8e6 7yp,i2xj-fehrnd )c dl)iation has the largest magnitudecx8df) d 2n)i7, jlephe-ryg6 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 yru lbla .1m:4c+s0am 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 KFK 6j 3qxjx5snn/A started broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length of its rn5jns /63jxq xadio 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 tra i2uq8v xkevpb8;k6kkq; ))rinsmitting antenna is equal to one-fourth ) ;2q8bk)kpkvxvek 68ii ;q ruthe wavelength of the broadcast wave. If a radio station 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 sie e y+y1,f,1gq3f rc-hn3wu /lrgjr7ngnal at a frequency of 100.0 MHz. What is the w r 3l1yf/j1f,+he,cyn7gg-r3 nu qw eravelength 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 ts(-o.wq,lx7q h s 7xldhe type of electromagnetic wav(xqw ,l -sql os.7hdx7e 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 has an electric field given by the expression 5ix)84 v8ed q x+doxkcjpyd1, pnj-9a (in Cartesp8j5d dvk4p -xc,ao + ei x)nyj89qx1dian 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 expresx y+jcjh 6t5 *qy9pbo3sion (in Cartesian b* xoy q35h9j+j6tycp coordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 gim9 bwat0 sr-3l*ywg0 vven by the expression (in Cartaw 9b 0*r0gsy -3vmwltesian 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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