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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 corrlosbr 4y :kf30 5,8q3ghvsm24a -0tduohlv fnect relationship for the speed v of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, mi 02b3 ,l0yu k ms4na8to:voq5vr34fdl hshgf-crowaves.

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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.u6 n,xgpmk0p the following electromagnetic waves in tm6xg0 upn.kp,erms 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 vacuum with a wavelength b mmu*4e,l)f oof 400 nm. Which one of the following b*luo)me4 ,fm 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 types of electromagnetic 89klq2y ekk; eoy 3*wdradiation has the least energy per photon?*k29k d3qwo 8kley y;e

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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 electromagnetic radiation has w av0kra-hy i2 99;ja/l auhz6the greatest energy per photy/la0 6wk9u9raz; -jhiavh2a on?

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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 followx1 wuzbpzvkrh 067 q,,ing types of electromagnetic radiation has the largest magnitude 6vxhpwbq,z r7 1z0u,kof 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 with 3.27 m radiog7vcdf-7nrs qi g7 xvfr9vzm 2m/y193,vtrc( 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 bs,vv (as8 jur-roadcasting 78 years ago at 1.31 MHz on the AM dial. What is th a,s-suvjr8(ve 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 issr8vcfq .mvz-e fry:78)bo j) equal 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 frequenc7 q)sf f- 8vbor:y rm.e8zjv)cy 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 of 100.0 MHz. What ) uu,r /e hr;.ffrbo,wi,e uw f; ,uhf./rr)robs 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 th*kwg kj9rh6t 9e following choices best represents the type of electromagnetic wave associated with a frequenrtwjg* 9h6k9 kcy 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 elect ictj3(q;f;rpric field given by the expression (in Cartesian coordinates)cf 3;t (i;pqjr:
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 exprfj(vr)r +7: m ahcght-ession (in Cartesian coordinatm:f jh tcr()g vr7ah+-es):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 by0f 2jz*eyz7n0)ezmp m the expression (in Cartesian coor znp *y)mjm0f0z7ze2e dinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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