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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 ejhn + xwzp(6; /fs4dqlfy6* hn6fsn2 correct relationship for the speed v of the following three electroml(sz fw2 /qffn +nphx*s6nhe6y 46j;d agnetic waves in vacuum? The waves 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 electromagnet.h +7byvffp eey .ttb)g4ps7* c(m +hxic waves in terms of increasing wavelengthm(v sff4yy7.teehp) *+ x7 gt+h.bcb p

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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 throuf6 y 24mx+s*5tg lwxk:rxy 7adgh vacuum with a wavelength of 400 nm. Which one of the following choices best w4 m6 xxtsd gk2*yf+:y7 rlx5adescribes 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 radiation has the 5uc cc7x7n- 1cfxk.mn least energy per pho-c xcu.fc75 ck xnnm71ton?

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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 followinbwoo 74nh8:x dbt 3g7ig types of electromagnetic radiation has the greatest energg:dixwbt3oonbh7 874 y 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 radiatd3zf95d7 dw nw(.epp fion has the largest magnitude of momentum per photo d39fedwnp.( pf5wdz7 n?

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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 radio waves?h/ oee8,u km)q

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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 bres7r jojz/hvnap22*: x- p ger u/h5u+oadcasting 78 years ago at 1.31 MHz on t asnvu*r2rpzh7e2x je/ u-+go p:/h5 jhe AM 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 eqs6 *0bkckjk+6:jhjix ual to one-fourth the wavelength of the broa i6 jx+jk*scj: h0kb6kdcast 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 signal at a frequency of 100.0 MHz. W ;0xl f l2dt+0/elvxxmzjd/c/hat is the wavelength of the station’s signtclllx/j0x/fd z/0 e+v mdx2;al?

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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 typ ;2 ,etl8 lhj /24ourdwbimq1ye of electromagnetic wave associated with a freq22li;8 m/ ru joqw1yh,let4bduency 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 x80 g7yhx+f+kj1vg hsthe expression (in Cartesian coordinkj0g ++8xsfh 1gvhy 7xates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 (i9d4g r yk36xxsn Cartesian coordinagysx4r36 k9xdtes):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 haspz. . u(l9ltnk a magnetic field given by the expression (in uzl (t ..knl9pCartesian 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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