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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 of the follofj45 ,4afb :agnu yqvyj hf375wing three electromagnetic waves in vacuum? The wavesb fjf g7jy:v qn,yufah45a54 3 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 *,feaywa(5x c)2fbv gspectrum, rank the following electromagnetic waves in termafb, )ayfw(5c2xv*g es 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 radiati :b:wsvw9az.r on travels through vacuum with a wavelength of 400 nm. Which one of the followwvs9zr .:w:baing 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 followro96 wtc+px9z ,jybv :ing types of electromagnetic radiation has the least energy per rbj9vz ytpwxc :o,96+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 foll.mu kqt 9c9rc 89kmi+rowing types of electromagnetic radiation has the greatest ene .9mik8r9 k9utrq+mc crgy 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 ox13apk bba hb9lt+ :.qf electromagnetic radiation has the largest m9bxlb3 a kbpt1+q .h:aagnitude 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 wit (ha:y 0gkrq0oh 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 years ago a:sga;run -8py:q g,fm t 1.31 MHz on the AM d -:;yfagp:8s,rgmqn u ial. 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 transmitt t/(ank*e b0wking antenna is equal to one-fourth the wavelengthw t* n0ek(k/ba 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 signal at a frequency 935s zfh ej7gcof 100.0 MHz. What is the wavelength of the stationf7e3hj z5s9 gc’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 electromig4 kc ge(p1+vzdt.)zas 76ifagnetic (kaizgivspfc6)+z74 d1t e.gwave 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 thepjz0r* x+p r+h .ijo.g expression (in Cartesian coordinates):p.h*rg +ojj.zxr0 pi +
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 pgd9gin0n3r lf7/6bzield given by the expression (in Cartesian coordinatesr93zfdbn 7ig6 p/ nl0g):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 fielsclpv :+ r htxnq:2/)fd given by the expression (in Cartesian c+cf2 t qv:s:)/hpxrl noordinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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