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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 f; ( kjrrk3raa)or the speed v of the following three electromagnetic waves in vacuuka3 rar)( krj;m? 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 electromafnmz)69vo+y:nrbs zz* (:sluy6 pjp 9gnetic spectrum, rank the following electromagnetic waves in(lnj6pfr)m +u9s: *y bzs o: nyzp9v6z 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 vac /hy*sn7dhi;v d8fp0kuum with a wavelength of 400 nm. Which one of the following choices best describes this th i7 */shk0n;8dvyp fdype 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 followip2 l+,nldw, oing types of electromagnetic radiation has the least energy perw,,nod+ll pi2 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 tyn/yuyqh -02hzt 21d sg+q +kxxpes of electromagnetic radiation has the greatest energy per photy+xs tqg khx+n/-2u1qzyh 02don?

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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 radiation has th 8hwn 8a36obc 0) ryobirgc9e5e largest magnitude of momentum per phc0w 9 hb8 5geoo38r)nabcry6i oton?

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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 rad djrq6)6s0 ycyio 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 rads5* tif*g,j4 s; bf0 cwlnrycfop:)/rio station KFKA started broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length of its radio waves?w sncf/t0cl p:brri s,*g5f 4*)of;yj

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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 isntfhb,2+x h7 o equal to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then whh+ nh7obx 2ft,at 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 broadcastsh ff2,cvzq q: wj+l3,e its signal at a frequency of 100.0 MHz. What is:23+,lqhzq,cj fwv ef the 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 fol1/yvlq1f5a fc +5g a-ashfsk-lowing choices best represents the type of electromagnetic wave assovqffssa1y/f5- +kh5a- gac1 lciated 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 th1 lvune 57.:*fe wrtgse expression (in Cartesian coor5 gelws f.ve7:u1n* rtdinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 kwbdinqp 9 (/;8xt.w dby the expression (in Cartesian coord8 nd/pxw( 9 kt;qw.ibdinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 ;gnhp8,e v)ob :tt)ut dh1jo;given by the expression (in ),hbjdh;o; 8n :)gp1tuttev o Cartesian 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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