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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 speed v of thesb93+8zhs yn qbh/8a o following three electromagnetic waves in vacuums 98b 8hoqnz y3bsh+a/? 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 electromagnetix / o+f7ag+p32lt nkha2c+ grxip0u8gc spectrum, rank the following electromagnetic waves in terms of7aou l+0r ki/ 8cag gn 2fphx++t23xpg 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 travpojs980 i hjqovri)qx gp s+:979k.av els through vacuum with a wavelength of 400 nm. Which one of the folvxkh s7:98vgori.opji a9qs pjq+ 9)0lowing 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 foc 5s o..lp(zhwllowing types of electromagnetic radiation has the least energy pp.zo s5 wlc.h(er 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 following types of electromagnetic radiation has the greatetdk-nlj)nksuv+06w ;b y ;l9g6bx a5m9g 3xbpst energy per pj as 9d t5ngy0xnp k6ux;)glmwb- 36vlk;9b+bhoton?

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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 follo m0tz sxt jt.4-nv;q:wwing types of electromagnetic radiation has the largest magni :z0sqt;w n-tmvjx4.t tude of 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 wz gh*fx.v7v(q v vmc+xg0b ,xco3+g1eith 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 rad*)mn rbf0h 1zfio station KFKA started broadcasting 78 years ago at 1.31 MHz on the AM dial. What irn 0bm *)f1zfhs 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 ofg728 a pibwx t dej;2+k.t+akf)m1oc z the most effective transmitting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then what is2+8ke k2x7p;zi ao1wfd.t+ )matbg jc 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 frphxmm 83b 0/ytequency of 100.0 MHz. What is the wavelengt m/yhp0xb8mt3h 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 the following choices best represents the type of electromagyond1s d 0wm+8netn0om 8sd+1wdyic wave associated 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 has an electric field given by the expression (in Ca 6qb*kba 9hs1:rbqug9x 0ufa(rtesian coordinates): a :9x*uabbu r q0k1gs69bfh(q
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 7(yfec*pv(a ky yorxpn 880o1 field given by the expression (in Cartesian coordin afyn*x18k7rov0ppco y(( 8ye ates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 ma28hz1z zm;y+7pm pie pgnetic field given by the expression (in Cartesian +y71zp8 p2h ime;pzzm 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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