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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 the speed v eicjm4ixfbn: :b + 38fof the following three electromagnetic waves in vacuum? The wavesx:bm i+8fj 3c fb:ne4i 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 the following electromagnetic wafk uf 3cn z 81bvh9vvcu99n-m*ves in terms of increasing wavelengtnh18n 3v k99c9bv *cv fzmuu-fh

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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 thlbup*cnsy - i-9d /lu )aof1i;rough vacuum with a wavelength of 400 nm. Which one of the following choices best describes this type of p-na1ld ocb 9ul)fu sy;/*-ii 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 has3jdg3 a.e)ibm4wfjs7 jl9do2 the least energ wa7eli4jdgjb js.o3 39m2df )y 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 electa :*,yre egxy* s3h0otromagnetic radiation has the greatestsy3 0* hrty,xe:og*ae 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 follown s4rqi1 f6zj)ing types of electromagnetic radiation has the largest magnitude of momejf46r1iz q)n sntum 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 broadye rp;lvbf s meb(l w,y fi/e/n4,d837casts with 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 yejog+iaxa8tc92 f8 tr8zlzq8 . ars ago at 1.31 MHz x 2qz a8c .z8laof8trgj+t9 8ion the AM dial. 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 effective transmitting antenna is equ5hs8 tf asvae0ylw, *g i+37gtal to one-fourth t3wve7 y *s0hg,58ltfat+ia gshe 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 br l3av95h6 x54mhqzp.6/uvn uvr 7vxqqoadcasts its signal at a frequency of 100.0 MHz. What is the wavex vqvq66vq47rn.zu9v/ 5h hau3mxp5llength 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 ofixo :4qyr-8u:f cf z9r electromagnetic wave associated with a frequenr:8 q9oif rfuy:xzc-4 cy 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 expre6wqg*8 +jlka/dr3 b tpssion (in Cartesiangj 8tkr6/3qblp d+*wa 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 f +;;sjcj hmj.dield given by the expression (in Cartescmd;j.js j; h+ian 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 2v8guo :j 1gprmagnetic field given by the expression (in Cartes: og2guj1p8v rian 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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