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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 corre*v ykdim10v)f ct relationship for the speed v of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, microwavk)mv0 *fy 1dvies.

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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 electroft1n xg(m et8a0+o.et .a+g kimagnetic waves in terms of increasagto+gtx8 1 enma( e+0i.tfk.ing 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 throughainh.; uguquy*g6yk(xi:kw0;2u adciuq /; - vacuum with a wavelength of 400 nm. Which one of the following choices best describes th*0(y6auwnui /c dyqik ghk2a;xg:; i q; -uuu.is 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 (;fzc.rv;whw( nsew/ v) zl9tpb23lb of electromagnetic radiation has the least energy per photoncl vb9s hv)(lp2z 3re.(tnw;w f wzb;/?

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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 foll2 zq22lh2/ e,)m(c0 )ou hywiv3ydpi+ fxwzoeowing types of electromagnetic radiation has the greatestvf eh(l dc pz0zh3y22wo),ew2 u2im )xqyoi/+ 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 following types of electromagnetic radiation has the larqyx 2l : sa2uewbyo 4*1fl3a+igest magnitude of momentum per photfxe qyia1o*: 4wubl+y23la 2son?

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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 wi4bu :o7:p uczoth 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 statont*zsu-x .j6 ion KFKA started broadcasting 78 years ago at 1.31 MHz on the AM dials-jn*x 6 zt.ou. 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 wg,j)ti1vkztq dpjk 5v 45: -vis equal to one-fourth the wavelength of the broad d j,p5)vti j v51k4kz-:gtwvqcast 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 b0 /*e oen;fayaroadcasts its signal at a frequency of 100.0 MHz. What is the wavelength of the statfay ena ;e/0*oion’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 bes izhyw 2 jtgb:499 u.c.ago3fot represents the type of electromagnetic wave associate 4zuiofg9g ob3.9thj.: 2yawc d 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 :c/ghgvic a zabsh3+. tf,) k1has an electric field given by the expression (in Cartesian cov:3 1g.) saakbthg cz /c,h+ifordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 az jzhi+1n aw4q t/4qn5n electric field given by the expression (in Cartesi+zn/ja5q zn 4h1 iwt4qan 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 electromagne7n mg2j1g:cu dtic wave has a magnetic field given by the expression (in Cartesian gmjcd1 72g:nucoordinates) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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