Solved papers for JEE Main & Advanced JEE Main Paper (Held On 10 April 2015)

done JEE Main Paper (Held On 10 April 2015) Total Questions - 1

• question_answer1) An electromagnetic wave travelling in the x-direction has frequency of \[2\times {{10}^{14}}Hz\]and electric field amplitude of \[27V{{m}^{-1}}.\]From the options given below, which one describes the magnetic field for this wave? JEE Main Online Paper (Held On 10 April 2015)
  A)
  \[\overset{\to }{\mathop{B}}\,(x.t)=(9\times {{10}^{-8}}T)\hat{i}\] \[\sin \left[ 2\pi (1.5\times {{10}^{-8}}x-2\times {{10}^{14}}t) \right]\]
  done clear
  B)
  \[\overset{\to }{\mathop{B}}\,(x,t)=(3\times {{10}^{-8}}T)\hat{j}\] \[\sin \left[ 1.5\times {{10}^{-6}}x-2\times {{10}^{14}}t) \right]\]
  done clear
  C)
  \[\overset{\to }{\mathop{B}}\,(x,t)=(3\times {{10}^{-8}}T)\hat{j}\] \[\sin \left[ 2\pi (1.5\times {{10}^{-8}}x-2\times {{10}^{14}}t) \right]\]
  done clear
  D)
  \[\overset{\to }{\mathop{B}}\,(x,t)=(9\times {{10}^{-8}}T)\hat{k}\] \[\sin \left[ 2\pi (1.5\times {{10}^{-6}}x-2\times {{10}^{14}}t) \right]\]
  done clear
  E)
   None of the above
  done clear
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