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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 corrlpwxct1gh+mrs )w7a :5/fb- g4t*dtoect relationship for the speed v of the following three electromagnetic waves in vacuum? The waves are : X-rays, UV rays, mi5wttm-xgadw g:f) 4 l/s7oc+* phbtr1crowaves.

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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 electromagnet d2jq m.q+w,ttic spectrum, rank the following electromagnetic waves in terms of incret +djmw2q.,tq asing 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 vac nhww*9 qfzy6;uum with a wavelength of 400 nm. Which one of the following cho*6 h;yfnz9qw wices 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 radg nfhm60;+edio0d 6j f5/1kxjq)z v xqiation has the least ene 6oqd;jfmfz5 0vd1nih+/0 kx6)jgx q ergy per 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 fole-iuq) owtvub98* ;iyq,u-e plowing types of electromagnetic radiation has the greatest energy per photon ;-uu, o9we8iyu-vq pbq )*ite?

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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 l *yuw*1 -5u j4 44 nfssamp3dahrj:njelectromagnetic radiation has the largest magnitude of mom5un4hmr1 4d:* j-w*3jljy4a nufsapsentum 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 broadbnr;w (6/l g;crwjr4 icasts 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 :r it,wtki7v 8yn-.vq 3nin;kbroadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length of its radio - wqtir;n y,k73vn:t8k iivn. 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 antennx c; bz;2/bd8q3mi.v/ qiihhya is equal to one-fourt;8 yimq i3hdxb;hqv2bzi/c ./h the wavelength 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 si3v 2urd,71b wo6 yxbjngnal at a frequency of 100.0 MHz. What is the wavelength of ybrvbj7w23 ,x ud1o6n 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 the following choices bes :hlg;n ny9q/vt represents the type of electromagnetic wave associated with a frequency of n:h/qv yn l9;g$10^{18}Hz$?

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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 d(x mx; uo)k- te+d9fk field given by the expression (in Cartesian coord- kx9k +xftd e;)(muodinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 expressiof;mj.h t,6t d5ps l fgtx80xm fl(:m.cn (in Cartesian co8pm ftt x0ml6f: xlth5gj fc(;.,s .mdordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 electromagneo5(m02y a3pu fczaj*etic wave has a magnetic field given by the expression (in Carza2fca (5emjo30y* up tesian 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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