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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: 匿名未登录  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 relation9g h 5 sp4wskb mvi)0wqn4)rz-ship for the speed v of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, microwavesg5v0wi4rbzs4m -wk)9h)sqn p .

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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 elec. , v:oow5qsyntromagnetic waves in terms of inv:owyqs o,. 5ncreasing 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 thxzq:r fk,jn4:rough vacuum with a wavelength of 400 nm. Which one of the following choices best describes t ::jqxzrf ,nk4his 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.*sz9va0zwx7m5yzpdnl+;ad8 c z i*0 mpe;qt types of electromagnetic radiation has the least energy per photos m+dyl*;z8 zz;x.q w7t0pe dapm9az0i*v5cn n?

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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 electroma txa a0zmbfc*3*h:ufg5e qw)5b/d ry+ gnetic radiation has the greatest 3zfq5 f :hubcd*/g+0br)ewa ma* t5yxenergy 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 largestlvxkf 0 +n: ymdu.8(xm magnitude of mxu(:n.dy f0vl xkm+8 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 broadcas3gqcs iq1dd n)s 0*fhe4* j:hots 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 broadcastingbjo)ts/bz: d- 78 years ago at 1.31 MHz on the At :bzd/-o j)bsM 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 equal 7wb jqp sfb1x;7tf*f/to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then what is the broadcast ffw/7pfx ;7sfqtjbb1 * requency 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 broadcas:ayu(0fw lg32 mx0 q1wa7 ausets its signal at a frequency of 100.0 MHz. What is the wavelength of the stu 0l f swwagay1:x7(quam 3e20ation’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 f:10ftx ov/43dgmlyswn: qa-r ollowing choices best represents the type of electromagnetic wave assocg:4yqxat3 1 sdfr:/ wnlom0v- iated 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 givee1 q/quhiw n0cm3) -5vwzrqn; n by the expression (in Cartesian coordina/5qnww0- ue; nr3civ mzh1q q)tes):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 (jhp5xe-5qu n, 1u2k n)bp7ogczo ( tcexpression (in Cartesian coordinates)5pu )xbjo5q2kenh-on7g p tu 1,(czc(:
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 given 66gi dbsf;ppgj7l w(0by the expression (in Cartesian coordinates)l( gsdjbw 66p;0 gfip7 $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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