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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 spee)pi*bme;v + *d0nyai1j2 kwgmd v of the following three electromagnetic waves in vacuum? The wavei0k)vg ;21nbmp* ay*+w d eimjs 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 wq,3um un11rz:rz;o.wr ia akj, xh;(v)x1i ugaves in terms of increasing waveleniu.xh1w;ug v1z)ox1a, q3 z nira(kr;ur:,jmgth

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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 van;mdz ve+8 /ntcuum with a wavelength of 400 nm. Which one of the fole/ tnm+;nz8d vlowing 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 e1sms3wt8o s v6 f69ybslectromagnetic radiation has the least energy per phofts sov 6y9 1sw8sm3b6ton?

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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 types0q0p v9voz ulk ni2ng wt+zvmqd650:;y 5imq) of electromagnetic radiation has the greatest energy per +9m6gvz 05)npy ilkd nq:tiwv0;0zvm qou52 qphoton?

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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 electr 7mk mwpu-1h1tomagnetic radiation has the largest magnitude of momentum ph17mup-k mt1w er 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 witgs8w fty5r3s6* tka5 cm9t (iyh 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 staw: hrc nlm+w c; ;rf56cjj0*gvaj(m3n rted broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate legvw;c6+n:l( *jaj hjwrr;f0mm 5 nc3cngth 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 of7 59*u us d:,yujr2llmry.mwv the most effective transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has an a9y2.v,ldu57rlmu smjr:wy u*ntenna 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 broa9z 7g6 w hcftb(pd96- tfyche9dcasts its signal at a frequency of 100.0 MHz. What is the wavelength of th-t7( fzc9 tpdh9966efyhcbw ge 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 tyzv.04 8 a8q5whlgpb akpe of electromagnetic wave associated with a freque0ak qb8 zp.v lgwha854ncy 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 expression 4 86h0udiwc +uxyqg1d(in Cartesian coo4 w8 cuhg+1dqidux60y rdinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 expression (in Carm htk7:6) xuwttesian coordinateu7twmtxh): 6k s):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 by the expression ( w2 xo6hg(viyoj0 e+v8in Carteihov 6e(o +xg8 jw2y0vsian 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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