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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 correct relationship for the speed v )8y6jhp*bm fe of the following three electromagnetic waves in vacuum? The)6bym j8e f*ph 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 +wtk qpr .l(u(q-/iw ofollowing electromagnetic waves in terms of ik. q/-lw+io ( rp(wutqncreasing 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 vacuum with a wavelength kb;ih rhwbi 8sxy8e26u)h5(cem- p o 3of 400 nm. Which one of the following c h- sr)(;b65ipec h8y8u3b2mieokhw xhoices 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 electroma4ss yn q)b1u pkx+3gjt,eb7 0ugnetic radiation has the least energy,jsu 1nq+kpgt 0u3 yb)x4se7b 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 following types of electromagnj392l(c,)*lv, a0gxhtwwhstb gia i 1etic radiation has the greatest energy per photon sxl*ghwh t 2g03aa ij(,wc1) v9ib,tl?

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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 radia) kz- 3dltbnvew0cm7 9tion has the largest magnitude of momentum-0 edlwmck)t9zn 3v7b 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 stationn2;-tr g s-f5ek r4eqi qxnqk.jr9 i)+ broadcasts 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 stu7 /lt+imo/yrof, nb /wp,9 wfation KFKA started broadcasting 78 years ago at 1.31 MHz on the AM dial. What is the approximate length of itw/9fr/f7plm ot/ ,+ winbuoy,s 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 transmi7usgxz8w (dxiar2x:8 tting antenna is equal to one-fourth the wavelength of the broadcast wave. If a radio st7dx8g :ix rsuzwx2 (a8ation 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 e4 r 0l4fcw 8*ym7bbosbroadcasts its signal at a frequency of 100.0 MHz. What is the wavelength of the sta74bbs rf08*ow em4l cytion’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 followingcx7h/dfln ,t5g-oxk i)0 ir*vd.6az+c eo4q e choices best represents the type of electromagnetic wave associ0 x-6g7ecda i*zfrvq o5e.x),di hto4/nc lk+ated 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 g2h vl+1q-/vio310h vymwja xsiven by the expression (in Cartesianohy1vw1h0vm a 23v-sq/lij +x coordinates):
$\overrightarrow{E}(x,t)\:=\:6.0cos(1.14\times\:10^7x-3.34\times\:10^{15}t)\overrightarrow{z}$
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 t8v1 2gbktsoy . *dgd4fhe expression (in Cartest .sg 4fo81b2gd*vkyd ian 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 electromagnetic ;(6 y plds.vq*auq7rs ypy* a4wave has a magnetic field given by the expression (in Cartesian coordinats(pql6**.ysvaqy;ra7 u pd4 yes) $\overrightarrow{B} = 6.0 \times\:10^{-6}cos(2.21\times\: 10^7z − 6.63\times\: 10^{15}t)\overrightarrow{x}$ . 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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