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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 r)bc:bppi d k46elationship for the speed v of the following three electromagnetici bd4:k6cppb) 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 spectrumv z :/h85kg sfw:qxf)o, rank the following electromagnetic waves in terms of incx:f)wv s o :k8hgf5qz/reasing 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 throfkzegt3; vq 6:pt4.zcugh vacuum with a wavelength of 400 nm.c gkq4.vf etzz;3:6pt Which one of the following 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 typenzt : ku27qko9s of electromagnetic radiation has the least energy per phou7qkknt29z: oton?

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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 folloo,y7 5,rr 45hxct zdkgwing types of electromagnetic radiation has the greatest endz h7,txyrc g,ok455rergy 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 radiation has the.q p b+80iyjtl-zt ohd -.ap3p largest magnitude of momentum per .t3 at--yl8pbh zod qi+pj.0 pphoton?

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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 r5 9 z ys:x31li;8uyztge g(b s(vjv-beadio 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 ago at 1.31 Mp-(9ecn k8xmd Hz on the AM dial. What is the approximate length of itskn- 9 cexp(d8m 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 transmn5zvc o3 gch)ah8tj*y9hd -s(itting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters (sac8)-dh 3h * 9yzc5jtognvhlong 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 statioj2 w0fs; kkdh251pprmn broadcasts its signal at a frequency of 100.0 MHz. What is the wavelengtj;pwk220hpdrsk 1m5fh 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 fo 8(j) tx68qfluhk9 jmj rte:m//-vvusllowing choices best represents the type of electromagnetic wave associafls v u :jr/ u)j(mkvj-8htmt8/9ex6qted 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 gi:s-/ 2 xwmtb5h ntxl8hven by the expression (in Cartesi5tm s:bhh- x n8wtl2/xan 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 exp1yhe) 8ka)lr1uxevh oa)v, ) yression (in Cartesih 1k 1ou vr)a)8evh)yle ya,)xan 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 electromagnetguo**;.s p 8 tdll:2/qw dirsxic wave has a magnetic field given by the expression (in Cartesian cot 2ls :u qw;o*r.8/g*pxi slddordinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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