Solved papers for JEE Main & Advanced JEE Main Paper (Held On 19 May 2012)

done JEE Main Paper (Held On 19 May 2012) Total Questions - 1

• question_answer1) If a, b, c, are non zero complex numbers satisfying \[{{\text{a}}^{\text{2}}}+{{\text{b}}^{\text{2}}}+{{\text{c}}^{\text{2}}}=0\]and\[\left| \begin{matrix}    {{b}^{2}}+{{c}^{2}} & ab & ac  \\    ab & {{c}^{2}}+{{a}^{2}} & bc  \\    ac & bc & {{a}^{2}}+{{b}^{2}}  \\ \end{matrix} \right|=k{{a}^{2}}{{b}^{2}}{{c}^{2}},\]is equal to     JEE Main  Online Paper (Held On 19  May  2012)
  A)
  1                             
  done clear
  B)
                         3
  done clear
  C)
                         4     
  done clear
  D)
                         2
  done clear
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